G.f.: 1 = Sum_{n>=0} a(n)*exp(-n!*x)*x^n/n!.

A191505

G.f.: 1 = Sum_{n>=0} a(n)*exp(-n!*x)*x^n/n!.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =4a(4) =75a(5) =7636a(6) =4866965a(7) =22256484426

External references