E.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n/n! * A(n*x)^n.

A218682

E.g.f. satisfies: A(x) = Sum_{n>=0} n^n * x^n/n! * A(n*x)^n.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =93a(4) =2944a(5) =167685a(6) =16037376a(7) =2481455137a(8) =609371157312

External references