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On the Summation of lr + 2r + 3r + … +nr

Published online by Cambridge University Press:  20 January 2009

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We shall use the notation Σnr= lr + 2r+…+ nr. Mr A. J. Gray suggested to me that n(n+ 1) is always a factor of Σnr, and that, in addition, 2n + 1 is a factor when r is even.

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Research Article
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Copyright © Edinburgh Mathematical Society 1912