75765

Appears in sequences

• Numbers k such that 2^(k-1) + k is prime.at n=6A061422
• Number of nonempty subsets of {1, 2, ..., n} with <=10 pairwise coprime elements.at n=32A187271
• G.f. satisfies A(x) = (1 + x) * (1 - x*A(x)^3).at n=13A364372