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When are Multiples of Polygonal Numbers again Polygonal Numbers?
Article by Jasbir S. Chahal and Nathan Priddis
In collection: Easily explained
Euler showed that there are infinitely many triangular numbers that are three times another triangular number. In general, as we prove, it is an easy...
URL: arxiv.org/abs/1806.07981v1
PDF: arxiv.org/pdf/1806.07981v1