PUMaC 2022 · 数论（A 组） · 第 6 题
PUMaC 2022 — Number Theory (Division A) — Problem 6
题目详情
- Given a positive integer ℓ , define the sequence { a } such that a = ⌊ n + n + ⌋ for n n n =1 2 all positive integers n . Let S denote the set of positive integers that appear in all three of the
解析
- Given a positive integer ℓ , define the sequence { a } such that a = ⌊ n + n + ⌋ for n n n =1 2 all positive integers n . Let S denote the set of positive integers that appear in all three of the