Abstract
1. Find all positive integers n such that \(\frac{{n}({n+1})}{3}\) is a perfect square. (Dorin Andrica) Soloution. Let \(\frac{{n}({n+1})}{3} = y^2,\) which is equivalent to
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© 2009 Birkhäuser Boston
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Andreescu, T., Andrica, D., Cucurezeanu, I. (2009). Solutions to Pell-Type Equations. In: An Introduction to Diophantine Equations. Birkhäuser Boston. https://doi.org/10.1007/978-0-8176-4549-6_7
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DOI: https://doi.org/10.1007/978-0-8176-4549-6_7
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