G.f.: x = Sum_{n>=1} a(n)*x^n/(1 + n*(n+1)/2*x)^n.
A196304
G.f.: x = Sum_{n>=1} a(n)*x^n/(1 + n*(n+1)/2*x)^n.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =64a(4) =1587a(5) =65421a(6) =4071178a(7) =357962760a(8) =42379107165
External references
- oeis: A196304
A196304
G.f.: x = Sum_{n>=1} a(n)*x^n/(1 + n*(n+1)/2*x)^n.