sum of pairs of 1, 2,...., 30 a perfect square?
Source: Czech-Polish-Slovak Junior Match 2015, Individual p2 CPSJ
March 15, 2020
number theorySumPerfect Square
Problem Statement
Decide if the vertices of a regular -gon can be numbered by numbers in such a way that the sum of the numbers of every two neighboring to be a square of a certain natural number.