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

A319176

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

Terms

    a(0) =1a(1) =1a(2) =8a(3) =93a(4) =1532a(5) =32240a(6) =829284a(7) =25192454a(8) =882825936a(9) =35055329832

External references