E.g.f.: exp( Sum_{n>=1} (n+1)^(n-1) * x^n / n ).
A220180
E.g.f.: exp( Sum_{n>=1} (n+1)^(n-1) * x^n / n ).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =42a(4) =924a(5) =36300a(6) =2265960a(7) =206703840a(8) =25945444560
External references
- oeis: A220180
A220180
E.g.f.: exp( Sum_{n>=1} (n+1)^(n-1) * x^n / n ).