220594domain: NAppears in sequencesG.f. A(x) satisfies: 1/(1-x) = Sum_{n>=0} x^n * (1+x)^(n^2) / A(x)^(n*(n+1)/2).at n=14A325578Numbers k not divisible by 3 such that no prime is the concatenation of two numbers whose sum is n.at n=6A375938