311305domain: NAppears in sequencesG.f. D(x) satisfies: Sum_{n>=0} n * (x + (-1)^n*A(x))^n = 0, where A(x) = D^8(x), the 8th iteration of D(x), and A(x) is the g.f. of A318640.at n=8A318643Expansion of Product_{k>=1} 1/(1 - x^k - x^(2*k) - x^(3*k)).at n=20A320286