O.g.f.: Sum_{n>=0} n^n*(n+4)^n * exp(-n*(n+4)*x) * x^n / n!.
A222078
O.g.f.: Sum_{n>=0} n^n*(n+4)^n * exp(-n*(n+4)*x) * x^n / n!.
Terms
- a(0) =1a(1) =5a(2) =47a(3) =742a(4) =16357a(5) =459369a(6) =15651260a(7) =626935936a(8) =28872594389
External references
- oeis: A222078