G.f. satisfies: A(x - 3*A(x)^2) = x + 2*A(x)^2.

A277302

G.f. satisfies: A(x - 3*A(x)^2) = x + 2*A(x)^2.

Terms

    a(0) =1a(1) =5a(2) =80a(3) =1900a(4) =55490a(5) =1848660a(6) =67630080a(7) =2657251005a(8) =110560510400

External references