E.g.f.: A(x) = exp( Sum_{n>=1} n(n+1)/2 * a(n-1)*x^n/n! ) = Sum_{n>=0} a(n)*x^n/n! with a(0)=1.
A156325
E.g.f.: A(x) = exp( Sum_{n>=1} n(n+1)/2 * a(n-1)*x^n/n! ) = Sum_{n>=0} a(n)*x^n/n! with a(0)=1.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =34a(4) =482a(5) =10056a(6) =286372a(7) =10591372a(8) =491169996a(9) =27826318000
External references
- oeis: A156325