Expansion of e.g.f.: exp(Sum_{k>=1} (k-1)*k*x^k).
A288269
Expansion of e.g.f.: exp(Sum_{k>=1} (k-1)*k*x^k).
Terms
- a(0) =1a(1) =0a(2) =4a(3) =36a(4) =336a(5) =3840a(6) =52800a(7) =836640a(8) =14864640a(9) =291755520a(10) =6264276480a(11) =145962432000
External references
- oeis: A288269