G.f.: 1/(1-x) = Sum_{n>=0} a(n) * x^n / Product_{k=1..n} (1 + k*x)^3.
A215529
G.f.: 1/(1-x) = Sum_{n>=0} a(n) * x^n / Product_{k=1..n} (1 + k*x)^3.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =31a(4) =377a(5) =6415a(6) =142252a(7) =3919208a(8) =129681162a(9) =5025119715a(10) =223662035160
External references
- oeis: A215529