G.f.: 1 = Sum_{n>=0} a(n) * x^n * (1 - (n+1)*x)^4.
A219780
G.f.: 1 = Sum_{n>=0} a(n) * x^n * (1 - (n+1)*x)^4.
Terms
- a(0) =1a(1) =4a(2) =26a(3) =220a(4) =2243a(5) =26484a(6) =353380a(7) =5239276a(8) =85243413a(9) =1507394980a(10) =28749072350a(11) =587631913212
External references
- oeis: A219780