a(n) = (5*n+9)(!^5)/9(!^5), related to A034301 ((5*n+2)(!^5) quintic, or 5-factorials).

A051690

a(n) = (5*n+9)(!^5)/9(!^5), related to A034301 ((5*n+2)(!^5) quintic, or 5-factorials).

Terms

    a(0) =1a(1) =14a(2) =266a(3) =6384a(4) =185136a(5) =6294624a(6) =245490336a(7) =10801574784a(8) =529277164416

External references