186108392724domain: NAppears in sequencesExpansion of g.f. A(x) satisfying 1 - Sum_{n>=1} (x^n - 3*A(x))^n = Product_{k>=1} (1 - x^(2*k)) * (1 + x^k - 3*A(x))^2 / (1 + x^(2*k) - 3*A(x))^2.at n=11A370343