MathDB
Albanian TST 2014 5th problem

Source:

April 22, 2014
modular arithmeticnumber theory proposednumber theory

Problem Statement

Find all non-negative integers k,nk,n which satisfy 22k+1+9ā‹…2k+5=n22^{2k+1} + 9\cdot 2^k+5=n^2.