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

A294047

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

Terms

    a(0) =1a(1) =1a(2) =10a(3) =195a(4) =6136a(5) =280745a(6) =17452296a(7) =1406162695a(8) =141881576320

External references