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

Binomial primes: positive integers n such that every i not coprime to n and not exceeding n/2 does not divide binomial(n-i-1,i-1).

A138389(n) = A000000(n) * A000000(n) + A000000(n)

Semiprimes where the larger prime factor is greater than the square of the smaller prime factor, short: semiprimes p*q, p^2 < q.

A138511(n) = A000000(n) * A000000(n) + A000000(n)

Numbers n such that there is no prime of the form 2n + p^2 for any prime p.

A138685(n) = A000000(n) * A000000(n) + A000000(n)

Toothpick sequence.

A139250(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form 4*x^2+x*y-4*y^2 (as well as of the form 4*x^2+9*x*y+y^2).

A141111(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form 2*x^2+5*x*y-5*y^2 (as well as of the form 7*x^2+11*x*y+2*y^2).

A141112(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form 4*x^2+6*x*y-7*y^2.

A141161(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form 9*x^2+7*x*y-5*y^2.

A141165(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form -x^2+6*x*y+2*y^2 (as well as of the form 7*x^2+10*x*y+2*y^2).

A141183(n) = A000000(n) * A000000(n) + A000000(n)

Primes of the form x^2+6*x*y-6*y^2 (as well as of the form x^2+8*x*y+y^2).

A141301(n) = A000000(n) * A000000(n) + A000000(n)