439695domain: NAppears in sequencesNumerators of sequence of fractions with e.g.f. sqrt(1+x)/(1-x)^2.at n=6A126121G.f.: A(x) = 1 + x*A(x)*A(-x) + x^2*exp( Sum_{n>=1} 2*L(n)^2*x^(2*n)/n ), where A(x) = exp(Sum_{n>=1} L(n)*x^n/n).at n=34A205566