G.f.: x = Sum_{n>=1} a(n-1) * x^n / Product_{k=1..n} (1 + n*k*x).
A275763
G.f.: x = Sum_{n>=1} a(n-1) * x^n / Product_{k=1..n} (1 + n*k*x).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =63a(4) =1514a(5) =59685a(6) =3512620a(7) =289374295a(8) =31846112564
External references
- oeis: A275763