G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n / (1-x)^(2*n+1) * [ Sum_{k=0..n} C(n,k)^2 * x^k ]^2.
A246464
G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n / (1-x)^(2*n+1) * [ Sum_{k=0..n} C(n,k)^2 * x^k ]^2.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =51a(4) =327a(5) =2252a(6) =16259a(7) =121406a(8) =929743a(9) =7261742a(10) =57620811a(11) =463174907a(12) =3763666589a(13) =30864808636a(14) =255117429497
External references
- oeis: A246464