a(0) = 0, a(1) = 1; a(n) = n! * [x^n] exp(n*x)*Sum_{k=1..n-1} a(k)*x^k/k!.
A293860
a(0) = 0, a(1) = 1; a(n) = n! * [x^n] exp(n*x)*Sum_{k=1..n-1} a(k)*x^k/k!.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =63a(4) =1648a(5) =65075a(6) =3629196a(7) =272106555a(8) =26418426560
External references
- oeis: A293860