Proof Without Words: Each But Two Triangular Numbers Is a Sum of Three Triangular Numbers

DOI10.4169/COLLEGE.MATH.J.46.3.172zbMath1406.97011OpenAlexW2492528475MaRDI QIDQ4581504

Roger B. Nelsen

Publication date: 20 August 2018

Published in: The College Mathematics Journal (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.4169/college.math.j.46.3.172

Mathematics Subject Classification ID

Other combinatorial number theory (11B75) Number theory (educational aspects) (97F60)

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