G.f. satisfies: A(A(x)) = Sum_{n>=1} a(n)*x^n / (1-2^n*x)^n, where g.f. A(x) = Sum_{n>=1} a(n)*x^n.
A193204
G.f. satisfies: A(A(x)) = Sum_{n>=1} a(n)*x^n / (1-2^n*x)^n, where g.f. A(x) = Sum_{n>=1} a(n)*x^n.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =264a(4) =18192a(5) =3363168a(6) =1536410944
External references
- oeis: A193204