2165546

  • \(gcd(fib_n, fib_m)=fib_{gcd(n, m)}\),证明见这里
  • \(\sum\limits_{i=0}^n \binom{n-i+1}{i} = fib_{n+2}\)
posted @ 2021-09-11 18:33  Administrator-09  阅读(0)  评论(0编辑  收藏  举报