G.f. satisfies A(x) = G(x/(1-x)^3) where G(x) = 1 + x*G(x)^3 is the g.f. of A001764.

A213282

G.f. satisfies A(x) = G(x/(1-x)^3) where G(x) = 1 + x*G(x)^3 is the g.f. of A001764.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =36a(4) =236a(5) =1656a(6) =12192a(7) =92960a(8) =727824a(9) =5817696a(10) =47281472a(11) =389533056a(12) =3245867136a(13) =27308274688a(14) =231654031104

External references