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

A365158

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

Terms

    a(0) =1a(1) =3a(2) =30a(3) =352a(4) =4680a(5) =66852a(6) =1002420a(7) =15562917a(8) =248028012a(9) =4034367018a(10) =66704722941

External references