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103.05 Sums of integers
Published online by Cambridge University Press: 14 February 2019
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- Copyright © Mathematical Association 2019
References
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5. Gaspar, J., Proof without words: using trapezoids to compute triangular numbers, Math. Mag. 91 (2018) pp. 206–207.10.1080/0025570X.2018.1451172Google Scholar