1 N2 N3 2025 Square

1 N2 N3 2025 Square. Fixpoint sum_n2 n := match n with 0 => 0 | s p => n*n + sum_n2 p end. There are several ways to solve this problem.

One way is to view the sum as the sum of the first 2n 2n integers minus the sum of the first n n even integers. There are several ways to solve this problem.