Central binomial coefficients also count (2431,4231,1432,4132)-avoiders

Abstract

This short paper is concerned with the enumeration of permutations avoiding the following four patterns: $2431$, $4231$, $1432$ and $4132$. Using a bijective construction, we prove that these permutations are counted by the central binomial coefficients.

8 pages, 1 figure

Cited by in corpus (1)

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