a(n) = (n(n+1)^(n-2)+0^(n-2))/(n+1).
A085390
a(n) = (n(n+1)^(n-2)+0^(n-2))/(n+1).
Terms
- a(0) =1a(1) =3a(2) =20a(3) =180a(4) =2058a(5) =28672a(6) =472392a(7) =9000000a(8) =194871710a(9) =4729798656a(10) =127253992476
External references
- oeis: A085390
A085390
a(n) = (n(n+1)^(n-2)+0^(n-2))/(n+1).