a(n) = exp(1) * Sum_{k>=0} (-1)^k * (n*k - 1)^n / k!.
A367784
a(n) = exp(1) * Sum_{k>=0} (-1)^k * (n*k - 1)^n / k!.
Terms
- a(0) =1a(1) =-2a(2) =5a(3) =17a(4) =17a(5) =-8151a(6) =-311435a(7) =-777974a(8) =927723585a(9) =82906687673
External references
- oeis: A367784