a(n) = exp(-n) * Sum_{k>=0} (k - n)^n * n^k / k!.
A337057
a(n) = exp(-n) * Sum_{k>=0} (k - n)^n * n^k / k!.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =3a(4) =52a(5) =255a(6) =4146a(7) =38766a(8) =688584a(9) =9685017a(10) =195875110a(11) =3655101703a(12) =84872077500
External references
- oeis: A337057