800952domain: NAppears in sequencesExpansion of Product_{k>=1} 1/(1-x^k)^(k+(-1)^k).at n=27A258386Expansion of g.f. A(x) satisfying Sum_{n>=0} Product_{k=1..n} (x^(2*k-1) - 3*A(x)) = 1 - 2*Sum_{n>=1} x^(n^2).at n=18A370340