MathDB
Japan MO Finals 2020-1

Source: Japan MO Finals 2020-1

February 11, 2020
Japannumber theory

Problem Statement

Find all pairs of positive integers (m,n)(m,n) such that n2+12m\frac{n^2+1}{2m} and 2n1+m+4\sqrt{2^{n-1}+m+4} are both integers.