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

Numbers with exactly two distinct decimal digits, neither of which is 0.

A101594(n) = A000000(n) * A000000(n) + A000000(n)

Numbers in base-12 representation that can be written with decimal digits.

A102487(n) = A000000(n) * A000000(n) + A000000(n)

Numbers whose base-20 representation can be written with decimal digits.

A102491(n) = A000000(n) * A000000(n) + A000000(n)

Primes p such that the number of divisors of p-1 is less than the number of divisors of p+1.

A103664(n) = A000000(n) * A000000(n) + A000000(n)

Ramanujan primes R_n: a(n) is the smallest number such that if x >= a(n), then pi(x) - pi(x/2) >= n, where pi(x) is the number of primes <= x.

A104272(n) = A000000(n) * A000000(n) + A182873(n)

Primes that can be written as concatenation of two primes in decimal representation.

A105184(n) = A000000(n) * A000000(n) + A000000(n)

Numbers with at least two odd prime factors (not necessarily distinct).

A105441(n) = A000000(n) * A000000(n) + A000000(n)

Numbers m such that m - 2 and m + 2 are semiprimes.

A105571(n) = A000000(n) * A000000(n) + A000000(n)

Belgian-0 numbers.

A106039(n) = A000000(n) * A000000(n) + A000000(n)

Primes indexed by semiprimes.

A106349(n) = A000000(n) * A000000(n) + A000000(n)