Decomposition into weight × level + jump - all 2D graphs

Home

Decomposition of A002081

3D graph (WebGL) / 2D graph - First 500 terms
Numbers congruent to {2, 4, 8, 16} mod 20.
A002081(n) = A000000(n) * A000000(n) + A000689(n+1)
Download CSV of the decomposition of A002081 (10000 lines.)
Decomposition of A002081 - 9997 dots.

Decomposition of Palindromes

3D graph (WebGL) / 2D graph - First 500 terms
Palindromes in base 10.
A002113(n) = A000000(n) * A000000(n) + A000000(n)
Download CSV of the decomposition of Palindromes (10000 lines.)
Decomposition of Palindromes - 9995 dots.

Decomposition of Odd Pythagorean primes

3D graph (WebGL) / 2D graph - First 500 terms
Odd Pythagorean primes: primes of form 4n + 1.
A002144(n) = A000000(n) * A000000(n) + A082073(n)
Download CSV of the decomposition of Odd Pythagorean primes (9999 lines.)
Decomposition of Odd Pythagorean primes - 9997 dots.

Decomposition of A002145

3D graph (WebGL) / 2D graph - First 500 terms
Primes of form 4n+3.
A002145(n) = A000000(n) * A000000(n) + A082075(n)
Download CSV of the decomposition of A002145 (9999 lines.)
Decomposition of A002145 - 9996 dots.

Decomposition of A002174

3D graph (WebGL) / 2D graph - First 500 terms
Values taken by reduced totient function psi(n).
A002174(n) = A000000(n) * A000000(n) + A000000(n)
Download CSV of the decomposition of A002174 (9999 lines.)
Decomposition of A002174 - 9996 dots.

Decomposition of A002180

3D graph (WebGL) / 2D graph - First 500 terms
Values taken by the half-totient function phi(m)/2.
A002180(n) = A000000(n) * A000000(n) + A000000(n)
Download CSV of the decomposition of A002180 (9999 lines.)
Decomposition of A002180 - 9996 dots.

Decomposition of A002202

3D graph (WebGL) / 2D graph - First 500 terms
Values taken by totient function phi(m).
A002202(n) = A000000(n) * A000000(n) + A083533(n)
Download CSV of the decomposition of A002202 (9999 lines.)
Decomposition of A002202 - 9996 dots.

Decomposition of A002313

3D graph (WebGL) / 2D graph - First 500 terms
Primes congruent to 1 or 2 modulo 4; or, primes of form x^2+y^2; or, -1 is a square mod p.
A002313(n) = A000000(n) * A000000(n) + A000000(n)
Download CSV of the decomposition of A002313 (10000 lines.)
Decomposition of A002313 - 9997 dots.

Decomposition of Oblong numbers

3D graph (WebGL) / 2D graph - First 500 terms
Oblong (or promic, pronic, or heteromecic) numbers: n(n+1).
A002378(n) = A000000(n) * A000000(n) + A005843(n)
Download CSV of the decomposition of Oblong numbers (9999 lines.)
Decomposition of Oblong numbers - 9995 dots.

Decomposition of A002384

3D graph (WebGL) / 2D graph - First 500 terms
Numbers n such that n^2 + n + 1 is prime.
A002384(n) = A000000(n) * A000000(n) + A000000(n)
Download CSV of the decomposition of A002384 (9999 lines.)
Decomposition of A002384 - 9995 dots.