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Divisors of the middle binomial coefficient. (English)
Am. Math. Mon. 122, No. 7, 636-644 (2015).
The middle binomial coefficients have a rich history with many and interesting combinatorial applications. In this paper, the author studies some problems involving divisors of the middle binomial coefficients and provides a new result: for $0\leqslant k < n$, $n-k$ divides $\binom{2n}{n}$ less frequently than not.
Reviewer: Mircea Merca (Cornu)
Classification: K25
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