E.g.f.: Sum_{n>=0} (W(x)^n - 1)^n * x^n / n!, where W(x) = exp(x*W(x)) = LambertW(-x)/(-x).

A326267

E.g.f.: Sum_{n>=0} (W(x)^n - 1)^n * x^n / n!, where W(x) = exp(x*W(x)) = LambertW(-x)/(-x).

Terms

    a(0) =1a(1) =0a(2) =2a(3) =9a(4) =112a(5) =1585a(6) =28776a(7) =637189a(8) =16725136a(9) =510567201a(10) =17872335280a(11) =709140147661

External references