a(n) = [x^n] Product_{k>=1} (1 - x^k)/(1 - n*x^k).

A319754

a(n) = [x^n] Product_{k>=1} (1 - x^k)/(1 - n*x^k).

Terms

    a(0) =1a(1) =0a(2) =3a(3) =24a(4) =252a(5) =3096a(6) =46620a(7) =823152a(8) =16776648a(9) =387413208a(10) =9999989010a(11) =285311493720

External references