G.f.: x = Sum_{n>=1} a(n) * [ Sum_{k>=1} k^n * x^k ]^n.

A276744

G.f.: x = Sum_{n>=1} a(n) * [ Sum_{k>=1} k^n * x^k ]^n.

Terms

    a(0) =1a(1) =-2a(2) =13a(3) =-248a(4) =12526a(5) =-1568368a(6) =466802541a(7) =-321051272000

External references