2658968130domain: NAppears in sequencesa(n) = binomial(5*n, n)/(4*n + 1).at n=11A002294One half of binomial coefficients binomial(2*n-8,9).at n=22A053133Product of next n numbers divided by the largest factorial divisor.at n=9A094336G.f. A(x) satisfies A(x) = 1 + x*A(x)^3*A(-x)^2.at n=22A143546