a(n) = n^2 * a(n-1) + n, a(0)=0.
A180255
a(n) = n^2 * a(n-1) + n, a(0)=0.
Terms
- a(0) =0a(1) =1a(2) =6a(3) =57a(4) =916a(5) =22905a(6) =824586a(7) =40404721a(8) =2585902152a(9) =209458074321
External references
- oeis: A180255
A180255
a(n) = n^2 * a(n-1) + n, a(0)=0.