a(n) = (n!)^2 [x^n] hypergeom([], [1], x)^8.

A385286

a(n) = (n!)^2 [x^n] hypergeom([], [1], x)^8.

Terms

    a(0) =1a(1) =8a(2) =120a(3) =2528a(4) =66424a(5) =2039808a(6) =70283424a(7) =2643158400a(8) =106391894904

External references