G.f. A(x) satisfies A(x) = 1/(1 - x*A(2*x)^3).

A171193

G.f. A(x) satisfies A(x) = 1/(1 - x*A(2*x)^3).

Terms

    a(0) =1a(1) =1a(2) =7a(3) =109a(4) =3207a(5) =174581a(6) =17929279a(7) =3559607005

External references