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

A230323

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

Terms

    a(0) =1a(1) =1a(2) =3a(3) =16a(4) =149a(5) =2196a(6) =47167a(7) =1380394a(8) =52206345a(9) =2457554248a(10) =140408870651

External references