Quote:
Originally Posted by CRGreathouse
True, but the bounds are pretty tight: n! + (n-1)! + (n-2)! + n-3 <= A180632(n) <= n! + (n-1)! + ... + 2! + 1!. |
I see why it's so hard, just annoying. It's hard to brute force when options for endpoint pairs grow by a factor of n^2.