E.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n/n! * A(n*x).
A218683
E.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n/n! * A(n*x).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =69a(4) =1432a(5) =52065a(6) =3202176a(7) =324172597a(8) =53099867136
External references
- oeis: A218683