a(n) = Sum_{k=0..n-1} C(n-1,k)^(n-k) * n/(n-k).
A181077
a(n) = Sum_{k=0..n-1} C(n-1,k)^(n-k) * n/(n-k).
Terms
- a(0) =1a(1) =3a(2) =10a(3) =59a(4) =726a(5) =20832a(6) =1405566a(7) =202357171a(8) =66675848266
External references
- oeis: A181077
A181077
a(n) = Sum_{k=0..n-1} C(n-1,k)^(n-k) * n/(n-k).