G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n * Product_{k=0..n} k!.
A219270
G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n * Product_{k=0..n} k!.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =357a(5) =36301a(6) =25099919a(7) =125586786039
External references
- oeis: A219270