G.f. A(x) satisfies A(x) = 1/(1 - x*A(2*x)^4).

A171194

G.f. A(x) satisfies A(x) = 1/(1 - x*A(2*x)^4).

Terms

    a(0) =1a(1) =1a(2) =9a(3) =185a(4) =7241a(5) =525513a(6) =71973193a(7) =19054326985

External references