a(n) = [x^n] G(x)^n, where G(x) is the o.g.f. of A079489.

A333563

a(n) = [x^n] G(x)^n, where G(x) is the o.g.f. of A079489.

Terms

    a(0) =1a(1) =3a(2) =53a(3) =1056a(4) =22181a(5) =480003a(6) =10588508a(7) =236720424a(8) =5344683429a(9) =121590541641

External references