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Nice problem

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September 5, 2017
number theory

Problem Statement

Given an integer n2n \ge 2 ,determine the numbers that written in the form a1a_1a2a_2++a2a_2a3a_3++......ak1a_{k-1}aka_k , where kk is an integer greater than or equal to 2, and a1a_1 ,... aka_k are positive integers with sum nn.