a(n+1) = (n^2 - 1)*a(n) + n + 1.
A006041
a(n+1) = (n^2 - 1)*a(n) + n + 1.
Terms
- a(0) =0a(1) =2a(2) =9a(3) =76a(4) =1145a(5) =27486a(6) =962017a(7) =46176824a(8) =2909139921a(9) =232731193690
External references
- oeis: A006041
A006041
a(n+1) = (n^2 - 1)*a(n) + n + 1.