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scent of a classic, diophantine 3 \cdot 2^n + 1 = m^2.

Source: Dutch MO 2008 p2

September 1, 2019
number theoryDiophantine equationdiophantine

Problem Statement

Find all positive integers (m,n)(m, n) such that 3ā‹…2n+1=m23 \cdot 2^n + 1 = m^2.