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Turkish MO 1994 P5

Source: Turkish Mathematical Olympiad 2nd Round 1994

September 27, 2006
quadraticscalculusintegrationnumber theory unsolvednumber theory

Problem Statement

Find the set of all ordered pairs (s,t)(s,t) of positive integers such that t2+1=s(s+1).t^{2}+1=s(s+1).
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