斐波那契数列前n项平方的和
斐波那契
https://ac.nowcoder.com/acm/contest/7047/A
1 * 1 + 2 * 2 + 3 * 3 + 5 * 5 + 8 * 8... n * n = n * (n+1)
证明:
斐波那契
https://ac.nowcoder.com/acm/contest/7047/A
1 * 1 + 2 * 2 + 3 * 3 + 5 * 5 + 8 * 8... n * n = n * (n+1)
证明:
相关推荐