a(n) = [x^n] G(x)^n, where G(x) = Product_{k >= 1} 1/(1 - x^k)^(k^2) is the g.f. of A023871.

A380290

a(n) = [x^n] G(x)^n, where G(x) = Product_{k >= 1} 1/(1 - x^k)^(k^2) is the g.f. of A023871.

Terms

    a(0) =1a(1) =1a(2) =11a(3) =73a(4) =539a(5) =3976a(6) =30107a(7) =229811a(8) =1771803a(9) =13749742a(10) =107305836a(11) =841211966a(12) =6619647419a(13) =52258136399a(14) =413682035393

External references