G.f. satisfies: A(x) = (1 + x*A(2x))^4.

A171203

G.f. satisfies: A(x) = (1 + x*A(2x))^4.

Terms

    a(0) =1a(1) =4a(2) =38a(3) =708a(4) =24961a(5) =1682688a(6) =220959136a(7) =57266675520

External references