E.g.f.: Sum_{n>=0} n^n * x^n / (n! * Product_{k=0..n} (1 - n*k*x)).
A227207
E.g.f.: Sum_{n>=0} n^n * x^n / (n! * Product_{k=0..n} (1 - n*k*x)).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =105a(4) =3568a(5) =204745a(6) =18028266a(7) =2278860535a(8) =394667414016
External references
- oeis: A227207