a(n) = [x^n] G(x)^n, where G(x) = Product_{k >= 1} ((1 + x^k)/(1 - x^k))^(k^2) is the g.f. of A206622.

A380582

a(n) = [x^n] G(x)^n, where G(x) = Product_{k >= 1} ((1 + x^k)/(1 - x^k))^(k^2) is the g.f. of A206622.

Terms

    a(0) =1a(1) =2a(2) =24a(3) =236a(4) =2432a(5) =25752a(6) =277152a(7) =3019088a(8) =33186816a(9) =367378814a(10) =4089875024a(11) =45741207228a(12) =513537853952

External references