G.f.: A(x) = exp( Sum_{n>=1} G_n(x^n)^3 * x^n/n ) such that G_n(x^n) = Product_{k=0..n-1} A(u^k*x) where u is an n-th root of unity.

A203268

G.f.: A(x) = exp( Sum_{n>=1} G_n(x^n)^3 * x^n/n ) such that G_n(x^n) = Product_{k=0..n-1} A(u^k*x) where u is an n-th root of unity.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =19a(4) =116a(5) =683a(6) =4818a(7) =31126a(8) =232058a(9) =1598611a(10) =12315375a(11) =86887285a(12) =695017086a(13) =4999457900a(14) =40344295044a(15) =298468091712

External references