a(n) = Sum_{k=1..n} k! * k^(n-2) * |Stirling1(n,k)|.
A373875
a(n) = Sum_{k=1..n} k! * k^(n-2) * |Stirling1(n,k)|.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =32a(4) =802a(5) =36854a(6) =2698598a(7) =288450168a(8) =42388536888
External references
- oeis: A373875
A373875
a(n) = Sum_{k=1..n} k! * k^(n-2) * |Stirling1(n,k)|.