O.g.f.: Sum_{n>=0} 5*n^n*(n+5)^(n-1) * exp(-n*(n+5)*x) * x^n / n!.
A217904
O.g.f.: Sum_{n>=0} 5*n^n*(n+5)^(n-1) * exp(-n*(n+5)*x) * x^n / n!.
Terms
- a(0) =1a(1) =5a(2) =40a(3) =550a(4) =11000a(5) =285380a(6) =9064560a(7) =340521520a(8) =14773539200a(9) =727281054640
External references
- oeis: A217904