On permutations avoiding 1324, 2143, and another 4-letter pattern

David Callan; Toufik Mansour

doi:10.1515/puma-2015-0018

On permutations avoiding 1324, 2143, and another 4-letter pattern

David Callan, Toufik Mansour

Department of Mathematics

Research output: Contribution to journal › Article › peer-review

Abstract

We enumerate permutations avoiding 1324, 2143, and a third 4-letter pattern τ a step toward the goal of enumerating avoiders for all triples of 4-letter patterns. The enumeration is already known for all but five patterns τ, which are treated in this paper.

Original language	English
Pages (from-to)	1-10
Number of pages	10
Journal	Pure Mathematics and Applications
Volume	26
Issue number	1
DOIs	https://doi.org/10.1515/puma-2015-0018
State	Published - 2017

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abstract = "We enumerate permutations avoiding 1324, 2143, and a third 4-letter pattern τ a step toward the goal of enumerating avoiders for all triples of 4-letter patterns. The enumeration is already known for all but five patterns τ, which are treated in this paper.",

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On permutations avoiding 1324, 2143, and another 4-letter pattern

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