a(n) = exp(n) * Sum_{k>=0} (-n)^k * (k - 1)^n / k!.
A335868
a(n) = exp(n) * Sum_{k>=0} (-n)^k * (k - 1)^n / k!.
Terms
- a(0) =1a(1) =-2a(2) =7a(3) =-31a(4) =149a(5) =-631a(6) =475a(7) =43210a(8) =-844727a(9) =10960505a(10) =-86569889a(11) =-584746911a(12) =46302579229
External references
- oeis: A335868