G.f. A(x) satisfies: x = Sum_{n>=1} x^n * A(-n*x)^n.

A266812

G.f. A(x) satisfies: x = Sum_{n>=1} x^n * A(-n*x)^n.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =20a(4) =275a(5) =7715a(6) =442829a(7) =52013252a(8) =12463418970

External references