a(n) = [x^n] Product_{k=0..n} 1/(1 - k*x)^3.

A383862

a(n) = [x^n] Product_{k=0..n} 1/(1 - k*x)^3.

Terms

    a(0) =1a(1) =3a(2) =48a(3) =1386a(4) =58278a(5) =3225915a(6) =221726711a(7) =18216234288

External references