a(n) = n! * [x^n] 1/(1 - 5*x)^(n/5).

A303488

a(n) = n! * [x^n] 1/(1 - 5*x)^(n/5).

Terms

    a(0) =1a(1) =1a(2) =14a(3) =312a(4) =9576a(5) =375000a(6) =17873856a(7) =1004306688a(8) =65006637696

External references