E.g.f. satisfies A(x) = exp( 3*x*A(x) / (1-x) ).

A361212

E.g.f. satisfies A(x) = exp( 3*x*A(x) / (1-x) ).

Terms

    a(0) =1a(1) =3a(2) =33a(3) =612a(4) =16353a(5) =576108a(6) =25306803a(7) =1334701854a(8) =82258866225

External references