E.g.f. satisfies: A(x) = Sum_{n>=0} log(1 + x*A(x)^(3*n))^n/n!.

A221097

E.g.f. satisfies: A(x) = Sum_{n>=0} log(1 + x*A(x)^(3*n))^n/n!.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =90a(4) =2328a(5) =84660a(6) =3972060a(7) =229176654a(8) =15712089120

External references