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Sums of Evenly Spaced Binomial Coefficients

by Arthur T. Benjamin (Harvey Mudd College) and Bob Chen (Harvey Mudd College) and Kimberly Kindred (Harvey Mudd College)

This article originally appeared in:
Mathematics Magazine
December, 2010

Subject classification(s): Discrete Mathematics | Graph Theory
Applicable Course(s): 3.7 Discrete Math

A combinatorial proof of a formula for the sum in the title is provided.

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