E.g.f. A(x) satisfies A(x) = exp(x) * B(x*A(x)), where B(x) = 1 + x*B(x)^3 is the g.f. of A001764.

A381985

E.g.f. A(x) satisfies A(x) = exp(x) * B(x*A(x)), where B(x) = 1 + x*B(x)^3 is the g.f. of A001764.

Terms

    a(0) =1a(1) =2a(2) =13a(3) =217a(4) =5937a(5) =223641a(6) =10725433a(7) =625007993a(8) =42883208609

External references