Sequence Database

A database with 899757 machine generated integer and decimal sequences.

Displaying result 0-99 of total 9597. [0] [1] [2] [3] [4] ... [95]

Sequence i41p5reh0akkh

1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +, A010052

a(n)=cf(n²)
cf(a)=characteristic function of a (in range)
n≥0
3 operations
Arithmetic
a(n)=cf(stern(n)²)
stern(n)=Stern-Brocot sequence
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf((n%8)²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(n²))
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(Δ(pt(n))²)
pt(n)=Pascals triangle by rows
Δ(a)=differences of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=cf(Δ(τ(n))²)
τ(n)=number of divisors of n
Δ(a)=differences of a
cf(a)=characteristic function of a (in range)
n≥1
5 operations
Prime

Sequence x1pra0juni4q

1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, more...

integer, periodic-2, non-monotonic, +, A059841

a(n)=1-a(n-1)
a(0)=1
n≥0
3 operations
Recursive
a(n)=cf(2*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=1-n%2
n≥0
5 operations
Divisibility
a(n)=a(n-2)^a(n-1)
a(0)=1
a(1)=0
n≥0
3 operations
Power
a(n)=floor(cos(a(n-1)))
a(0)=1
n≥0
3 operations
Trigonometric
a(n)=a(n-1)!-a(n-1)
a(0)=1
n≥0
4 operations
Combinatoric
a(n)=p(n+a(n-1))*a(n-2)/p(n)
a(0)=1
a(1)=0
p(n)=nth prime
n≥0
9 operations
Prime

Sequence ew0hrpkczgtpo

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +, A055641

a(n)=cf(10*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(10+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(10*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(lcm(n, 10))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility

Sequence 2hy0cqv1askfo

1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-9, non-monotonic, +, A267142

a(n)=cf(9*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(9+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(lcm(n, 9))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility
a(n)=sqrt(cf(9*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 3wor1ztxutjen

1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, periodic-8, non-monotonic, +, A253513

a(n)=cf(8*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(8+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(8*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(lcm(n, 8))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility

Sequence ei0mqzsuzpkah

1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, more...

integer, periodic-7, non-monotonic, +, A082784

a(n)=cf(7*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(7+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(7*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(lcm(n, 7))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility

Sequence cd4u2mspo3jnc

1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, more...

integer, periodic-6, non-monotonic, +, A079979

a(n)=cf(6*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(6+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(6*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(lcm(n, 6))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility

Sequence u2gzwbjtqbgy

1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-5, non-monotonic, +, A079998

a(n)=cf(5*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(5+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(5*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(lcm(n, 5))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility

Sequence ilce2tqmdeeqe

1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, more...

integer, periodic-4, non-monotonic, +, A121262

a(n)=cf(4*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(4+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(lcm(n, 4))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility
a(n)=sqrt(cf(4*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence b0yqgfcwojfsn

1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, more...

integer, periodic-3, non-monotonic, +, A079978

a(n)=cf(3*n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(3+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(lcm(n, 3))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility
a(n)=sqrt(cf(3*n))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cos(a(n-1))*a(n-3)
a(0)=1
a(1)=0
a(2)=0
n≥0
4 operations
Trigonometric
a(n)=a(n-1)!*a(n-3)
a(0)=1
a(1)=0
a(2)=0
n≥0
4 operations
Combinatoric

Sequence dtftedbjdrgql

1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, non-monotonic, +, A010054

a(n)=cf(∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
3 operations
Variable
a(n)=cf(n+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(∑(n))²
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=cf(∑(n))%2
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(∑(n)))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=0
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence wbg0krto3xnqe

-1, -1, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, more...

integer, non-monotonic, -

a(n)=-cf(n²)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Arithmetic
a(n)=-cf(stern(n)²)
stern(n)=Stern-Brocot sequence
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-sqrt(cf(n²))
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence zks5p10roznmm

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(3*a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(3*a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence ifgtueogu2bui

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +

a(n)=cf(10+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(10+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 5rnt3tcut1k2k

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-9, non-monotonic, +

a(n)=cf(9+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(9+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence nnx5hmejraghh

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-8, non-monotonic, +

a(n)=cf(8+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(8+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 3v5yubwgltayn

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, more...

integer, periodic-7, non-monotonic, +

a(n)=cf(7+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(7+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence uxuaeanpnna4l

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, more...

integer, periodic-6, non-monotonic, +, A172051

a(n)=cf(6+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(floor(n/6))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(6+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence yyx5dmjsecovl

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(2*a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(2*a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence ytpiv1bfap02m

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +

a(n)=cf(10+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/10))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(10+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence z00xn0tzmhdqc

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, periodic-9, non-monotonic, +

a(n)=cf(9+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/9))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(9+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence g040nteptgvjk

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(3*a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(3*a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(ϕ(9*a(n-1)))
a(0)=4
ϕ(n)=number of relative primes (Euler's totient)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence snlhcyfbyy2zf

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, more...

integer, periodic-8, non-monotonic, +

a(n)=cf(8+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(8+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence vqm5wtunuai3g

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, periodic-7, non-monotonic, +

a(n)=cf(7+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(7+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence rfieicbkms0pm

0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, periodic-6, non-monotonic, +

a(n)=cf(6+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(6+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence hng1fctrx4zxe

0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, more...

integer, periodic-5, non-monotonic, +

a(n)=cf(5+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(floor(n/5))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(5+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence kdjaddf2ptmpe

0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(2*a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(2*a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(1+σ(a(n-1)))
a(0)=4
σ(n)=divisor sum of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence ll2njongen5xd

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +

a(n)=cf(10+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(10+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence rvlyztad0l4ud

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, non-monotonic, +

a(n)=cf(4*a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(Δ(4^n))
Δ(a)=differences of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence wh2ymmwz4vy5j

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, periodic-9, non-monotonic, +

a(n)=cf(9+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(9+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence biogesxls0phj

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, more...

integer, periodic-8, non-monotonic, +

a(n)=cf(8+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/8))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(8+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence t0xhnayqx4jnp

0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-7, non-monotonic, +

a(n)=cf(7+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/7))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(7+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence p5jcqzkldkvtp

0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(3*a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(∏(gcd(n, 3)))
gcd(a,b)=greatest common divisor
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(3*a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(4+p(a(n-1)))
a(0)=3
p(n)=nth prime
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime
a(n)=cf(3^P(n))
P(n)=Partition numbers
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence fcnegvgfcryei

0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, periodic-6, non-monotonic, +

a(n)=cf(6+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(Δ(lcm(n, 3)))
lcm(a,b)=least common multiple
Δ(a)=differences of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(6+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence v2oxuarwp2jlc

0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, more...

integer, periodic-5, non-monotonic, +

a(n)=cf(5+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(5+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence qmwlfpaborgu

0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, more...

integer, periodic-4, non-monotonic, +, A011765

a(n)=cf(4+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(floor(n/4))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(4+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=n%(2-a(n-1)-a(n-2))
a(0)=0
a(1)=0
n≥0
7 operations
Divisibility

Sequence s5v143p4f4rio

0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, non-monotonic, +

a(n)=cf(2*a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(2*a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(ϕ(6*a(n-1)))
a(0)=3
ϕ(n)=number of relative primes (Euler's totient)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence xz3smfycdyfqh

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +

a(n)=cf(10+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(10+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence n5b2v5b4jtwfl

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, more...

integer, periodic-9, non-monotonic, +

a(n)=cf(9+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(9+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence mzxgmnoah02ho

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(5*a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(5*a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(8+P(a(n-1)))
a(0)=2
P(n)=Partition numbers
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence q13zdcmoiurin

0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-8, non-monotonic, +

a(n)=cf(8+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(8+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 00ugcarxgbuvj

0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, more...

integer, periodic-7, non-monotonic, +

a(n)=cf(7+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(7+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence bthsli4h3u1mg

0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(4*a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(4*a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(ϕ(8*a(n-1)))
a(0)=2
ϕ(n)=number of relative primes (Euler's totient)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence qocnzwdgjjkdh

0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, more...

integer, periodic-6, non-monotonic, +

a(n)=cf(6+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/6))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(6+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence ymq4af4wgybop

0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, more...

integer, periodic-5, non-monotonic, +

a(n)=cf(5+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/5))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(5+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence bgbotbdfnqqzo

0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(3*a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(Δ(3^n))
Δ(a)=differences of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(ϕ(9*a(n-1)))
a(0)=2
ϕ(n)=number of relative primes (Euler's totient)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime
a(n)=cf(∏(C(a(n-1), a(n-2))))
a(0)=2
a(1)=3
C(n,k)=binomial coefficient
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence yd4aa1bjkyabi

0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, more...

integer, periodic-4, non-monotonic, +

a(n)=cf(4+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(4+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence vyf4e5bqmb14j

0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, more...

integer, periodic-3, non-monotonic, +, A022003

a(n)=cf(3+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(floor(n/3))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=lcm(1+a(n-1), a(n-3))
a(0)=0
a(1)=0
a(2)=1
lcm(a,b)=least common multiple
n≥0
5 operations
Divisibility
a(n)=exp(a(n-1))*a(n-3)
a(0)=0
a(1)=0
a(2)=1
n≥0
4 operations
Power
a(n)=cos(a(n-1))*a(n-3)
a(0)=0
a(1)=0
a(2)=1
n≥0
4 operations
Trigonometric
a(n)=a(n-1)!*a(n-3)
a(0)=0
a(1)=0
a(2)=1
n≥0
4 operations
Combinatoric

Sequence h0k42gx0d5a4d

0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(2*a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(∏(gcd(n, 2)))
gcd(a,b)=greatest common divisor
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(2*a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(1+σ(a(n-1)))
a(0)=2
σ(n)=divisor sum of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime
a(n)=cf(2^pt(n))
pt(n)=Pascals triangle by rows
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence 0xvbk0jqhx0fp

0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, +

a(n)=cf(10+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(10+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence andmkzljsa00c

0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, periodic-9, non-monotonic, +

a(n)=cf(9+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(9+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence x1zqnpigpxfln

0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, periodic-8, non-monotonic, +

a(n)=cf(8+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(8+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence r4fxyltjrthxe

0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, more...

integer, periodic-7, non-monotonic, +

a(n)=cf(7+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(7+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence r1fynyyjrt1ee

0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf(7*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(7^n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(gcd(n, 7²))
gcd(a,b)=greatest common divisor
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=cf(7*gpf(a(n-1)))
a(0)=1
gpf(n)=greatest prime factor of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence wgea1mustje1h

0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, more...

integer, periodic-6, non-monotonic, +

a(n)=cf(6+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(6+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence jy1slpuksnzaf

0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(6*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(6^n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(lcm(a(n-1)², 6))
a(0)=1
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=cf(C(n², 2))
C(n,k)=binomial coefficient
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=cf(6^Ω(n))
Ω(n)=max factorization terms
cf(a)=characteristic function of a (in range)
n≥1
5 operations
Prime

Sequence ovuiw2ewrevcc

0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, periodic-5, non-monotonic, +

a(n)=cf(5+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(5+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence ys2kectweu3th

0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(5*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(5^n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(gcd(n, 5²))
gcd(a,b)=greatest common divisor
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=cf(5*gpf(a(n-1)))
a(0)=1
gpf(n)=greatest prime factor of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence msyrz5sw2ksrl

0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, more...

integer, periodic-4, non-monotonic, +

a(n)=cf(4+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/4))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=∑(∑(n))%2
∑(a)=partial sums of a
n≥0
5 operations
Divisibility
a(n)=sqrt(cf(4+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence fmd0qr22ok4xo

0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, more...

integer, periodic-3, non-monotonic, +

a(n)=cf(3+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=Δ(round(n/3))
Δ(a)=differences of a
n≥0
5 operations
Arithmetic
a(n)=∑(n)%3
∑(a)=partial sums of a
n≥0
4 operations
Divisibility
a(n)=sqrt(cf(3+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 1hrpi15fcvfjm

0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(3*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(3^n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(gcd(n, 9²))
gcd(a,b)=greatest common divisor
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=cf(3^Ω(n))
Ω(n)=max factorization terms
cf(a)=characteristic function of a (in range)
n≥1
5 operations
Prime

Sequence v5ktgrvrx0erf

0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +, A209229

a(n)=cf(2*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(2^n)
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Power
a(n)=cf(gcd(n, 8²))
gcd(a,b)=greatest common divisor
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility
a(n)=cf(1+σ(a(n-1)))
a(0)=1
σ(n)=divisor sum of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime
a(n)=cf(∏(C(a(n-2), a(n-1))))
a(0)=1
a(1)=2
C(n,k)=binomial coefficient
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence zqha2v53mv3mf

0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n*a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(n!)
cf(a)=characteristic function of a (in range)
n≥0
3 operations
Combinatoric
a(n)=cf(∏(1+n))
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n*a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∏(Δ(∑(n))))
∑(a)=partial sums of a
Δ(a)=differences of a
∏(a)=partial products of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Variable
a(n)=cf(2*σ(a(n-1)))
a(0)=1
σ(n)=divisor sum of n
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence i4yfgyiawntlh

-1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, -1, 0, more...

integer, periodic-2, non-monotonic, -

a(n)=1-gcd(n, 2)
gcd(a,b)=greatest common divisor
n≥0
5 operations
Divisibility
a(n)=-cf(2*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-∑(-a(n-1))
a(0)=1
∑(a)=partial sums of a
n≥0
4 operations
Recursive
a(n)=2^(n%2)-2
n≥0
7 operations
Power
a(n)=floor(Δ(cos(a(n-1))))
a(0)=1
Δ(a)=differences of a
n≥0
4 operations
Trigonometric
a(n)=1-gcd(n, 2)!
gcd(a,b)=greatest common divisor
n≥0
6 operations
Combinatoric

Sequence 2dgx521wu0g2d

0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n*a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(lcm(n, a(n-1)))
a(0)=5
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Divisibility
a(n)=cf(5*n!)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=sqrt(cf(n*a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(p(n)*a(n-1))
a(0)=5
p(n)=nth prime
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence snj3dp02xzlxg

0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n+a(n-1))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(5+∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n+a(n-1)))
a(0)=5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=5
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence dqcs1oxxpwlsi

0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n*a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(4*n!)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=sqrt(cf(n*a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(p(n)*a(n-1))
a(0)=4
p(n)=nth prime
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence vesi25wrzrxzm

0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf(n+a(n-1))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(4+∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n+a(n-1)))
a(0)=4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=4
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence x2qion4opjnsm

0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n*a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(3*n!)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=sqrt(cf(n*a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(p(n)*a(n-1))
a(0)=3
p(n)=nth prime
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Prime

Sequence q2kvvubvdw04m

0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, non-monotonic, +

a(n)=cf(n+a(n-1))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(3+∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n+a(n-1)))
a(0)=3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=3
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence 0xdi0qfomhfcj

0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, non-monotonic, +

a(n)=cf(n*a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(2*n!)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric
a(n)=sqrt(cf(n*a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 05rk5xn5ni5ze

0, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n+a(n-1))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(2+∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n+a(n-1)))
a(0)=2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=2
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence dgv1q1tyigswg

0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf((1+n)²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=cf(∑(2+a(n-1)))
a(0)=1
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=cf(n²)%n
cf(a)=characteristic function of a (in range)
n≥1
5 operations
Divisibility
a(n)=cf(pt(n)²)
pt(n)=Pascals triangle by rows
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Combinatoric
a(n)=cf(stern(composite(n))²)
composite(n)=nth composite number
stern(n)=Stern-Brocot sequence
cf(a)=characteristic function of a (in range)
n≥1
5 operations
Prime

Sequence m2qujyxwxk51k

0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(n+a(n-1))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=cf(1+∑(n))
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=sqrt(cf(n+a(n-1)))
a(0)=1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power
a(n)=cf(∑(C(n, a(n-1))))
a(0)=1
C(n,k)=binomial coefficient
∑(a)=partial sums of a
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Combinatoric

Sequence xvvzbyjajicpi

1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, more...

integer, non-monotonic, +, A065803

a(n)=cf(n²-1)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=Δ(floor(sqrt(n)))
Δ(a)=differences of a
n≥0
4 operations
Power
a(n)=τ(n)%2
τ(n)=number of divisors of n
n≥1
4 operations
Prime

Sequence k1bvo5wf5tlxn

1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(stern(n²))
stern(n)=Stern-Brocot sequence
cf(a)=characteristic function of a (in range)
n≥0
4 operations
Recursive
a(n)=sqrt(cf(stern(n²)))
stern(n)=Stern-Brocot sequence
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Power

Sequence 3zjjzeko4hgbi

-9, -9, -10, -10, -9, -10, -10, -10, -10, -9, -10, -10, -10, -10, -10, -10, -9, -10, -10, -10, -10, -10, -10, -10, -10, -9, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -9, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -9, more...

integer, non-monotonic, -

a(n)=cf(n²)-10
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence gam2bsvayd2vj

-8, -8, -9, -9, -8, -9, -9, -9, -9, -8, -9, -9, -9, -9, -9, -9, -8, -9, -9, -9, -9, -9, -9, -9, -9, -8, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -8, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -9, -8, more...

integer, non-monotonic, -

a(n)=cf(n²)-9
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence shacm0piii2jf

-7, -7, -8, -8, -7, -8, -8, -8, -8, -7, -8, -8, -8, -8, -8, -8, -7, -8, -8, -8, -8, -8, -8, -8, -8, -7, -8, -8, -8, -8, -8, -8, -8, -8, -8, -8, -7, -8, -8, -8, -8, -8, -8, -8, -8, -8, -8, -8, -8, -7, more...

integer, non-monotonic, -

a(n)=cf(n²)-8
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence dovdgdlycjmwf

-6, -6, -7, -7, -6, -7, -7, -7, -7, -6, -7, -7, -7, -7, -7, -7, -6, -7, -7, -7, -7, -7, -7, -7, -7, -6, -7, -7, -7, -7, -7, -7, -7, -7, -7, -7, -6, -7, -7, -7, -7, -7, -7, -7, -7, -7, -7, -7, -7, -6, more...

integer, non-monotonic, -

a(n)=cf(n²)-7
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence ycoxxkpl5tydi

-5, -5, -6, -6, -5, -6, -6, -6, -6, -5, -6, -6, -6, -6, -6, -6, -5, -6, -6, -6, -6, -6, -6, -6, -6, -5, -6, -6, -6, -6, -6, -6, -6, -6, -6, -6, -5, -6, -6, -6, -6, -6, -6, -6, -6, -6, -6, -6, -6, -5, more...

integer, non-monotonic, -

a(n)=cf(n²)-6
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence iiqxwcscsvtqp

-4, -4, -5, -5, -4, -5, -5, -5, -5, -4, -5, -5, -5, -5, -5, -5, -4, -5, -5, -5, -5, -5, -5, -5, -5, -4, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -5, -4, more...

integer, non-monotonic, -

a(n)=cf(n²)-5
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence 2gf2ydmggt1aj

-3, -3, -4, -4, -3, -4, -4, -4, -4, -3, -4, -4, -4, -4, -4, -4, -3, -4, -4, -4, -4, -4, -4, -4, -4, -3, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -4, -3, more...

integer, non-monotonic, -

a(n)=cf(n²)-4
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence yyhiwpwoenjyg

-2.1415926536, -2.1415926536, -3.1415926536, -3.1415926536, -2.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -2.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -2.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, -3.1415926536, more...

decimal, non-monotonic, -

a(n)=cf(n²)-π
cf(a)=characteristic function of a (in range)
π=3.141...
n≥0
5 operations
Arithmetic

Sequence cmmvct5b34e2c

-2, -2, -3, -3, -2, -3, -3, -3, -3, -2, -3, -3, -3, -3, -3, -3, -2, -3, -3, -3, -3, -3, -3, -3, -3, -2, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -2, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -2, more...

integer, non-monotonic, -

a(n)=cf(n²)-3
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence d2arlswafk1so

-1, -1, -2, -2, -1, -2, -2, -2, -2, -1, -2, -2, -2, -2, -2, -2, -1, -2, -2, -2, -2, -2, -2, -2, -2, -1, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, more...

integer, non-monotonic, -

a(n)=cf(n²)-2
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence md4l0fwksj3un

-1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, more...

integer, periodic-3, non-monotonic, -

a(n)=-cf(3*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(3+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 3))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence qt1qbnehnidnk

-1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, 0, 0, -1, 0, more...

integer, periodic-4, non-monotonic, -

a(n)=-cf(4*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(4+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 4))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence lhwsmym0qtusp

-1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, -1, 0, 0, 0, 0, more...

integer, periodic-5, non-monotonic, -

a(n)=-cf(5*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(5+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 5))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence abard10c3yztn

-1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, -1, 0, more...

integer, periodic-6, non-monotonic, -

a(n)=-cf(6*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(6+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 6))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence 2qp5wgt1l2zgo

-1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, -1, more...

integer, periodic-7, non-monotonic, -

a(n)=-cf(7*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(7+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 7))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence zibgsvhxnxl5l

-1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, -1, 0, more...

integer, periodic-8, non-monotonic, -

a(n)=-cf(8*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(8+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 8))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence bcyfcsgxy1zsm

-1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, more...

integer, periodic-9, non-monotonic, -

a(n)=-cf(9*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(9+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 9))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence hozvooidn2jpc

-1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, more...

integer, periodic-10, non-monotonic, -

a(n)=-cf(10*n)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic
a(n)=-cf(10+a(n-1))
a(0)=0
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Recursive
a(n)=-cf(lcm(n, 10))
lcm(a,b)=least common multiple
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Divisibility

Sequence m1cgoiookoo3n

0, 0, -1, -1, 0, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, more...

integer, non-monotonic, -

a(n)=cf(n²)-1
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence 53dpv5tdzdxec

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf((5+n)²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence zmkhg1vna5ksi

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf((4+n)²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence rt5qy2tgvxzfb

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(10+n²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence nt5wbec4z34rn

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, more...

integer, non-monotonic, +

a(n)=cf((3+n)²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

Sequence 4mafy11lpeftd

0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, more...

integer, non-monotonic, +

a(n)=cf(9+n²)
cf(a)=characteristic function of a (in range)
n≥0
5 operations
Arithmetic

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