a(n) = Sum_{k=0..n} binomial(n,n-k)*n^(n-k)*n!/(n-k)!.
A277373
a(n) = Sum_{k=0..n} binomial(n,n-k)*n^(n-k)*n!/(n-k)!.
Terms
- a(0) =1a(1) =2a(2) =14a(3) =168a(4) =2840a(5) =61870a(6) =1649232a(7) =51988748a(8) =1891712384a(9) =78031713690
External references
- oeis: A277373