95762domain: NAppears in sequencesConstant term in the reduction by (x^2->x+1) of the polynomial p(n,x) defined below at Comments.at n=13A192921Column 5 of A060244.at n=30A291590a(n) = [x^n] (1 + p(x))^n, where p(x) is the g.f. of A000040.at n=7A309955Expansion of Sum_{k>0} (1/(1 - (k*x)^k)^2 - 1).at n=5A363646