Classical looking NT
Source: Iranian Our MO 2020 P3
March 11, 2020
number theory
Problem Statement
Does there exist a non-constant infinite sequence of distinct natural numbers such that for all large enough we have that sum of any -sized sub-sequence is square-free if and only if is square-free.Proposed by Alireza Haqi, Amir Rezaie Moghadam Rated 3