a(n) = exp(n) * Sum_{k>=0} (-1)^k * n^(k-1) * k^(n-1) / k!.
A334986
a(n) = exp(n) * Sum_{k>=0} (-1)^k * n^(k-1) * k^(n-1) / k!.
Terms
- a(0) =1a(1) =-1a(2) =2a(3) =-5a(4) =9a(5) =53a(6) =-1107a(7) =12983a(8) =-116470a(9) =560049a(10) =8370713a(11) =-346902877a(12) =7551856337a(13) =-117404648467a(14) =913399734614
External references
- oeis: A334986