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

A294192

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

Terms

    a(0) =1a(1) =1a(2) =28a(3) =1881a(4) =241696a(5) =50903725a(6) =15950981376

External references