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Permutations avoiding a set of patterns from S_3 and a pattern from S_4

T. Mansour
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Abstract

In this paper we calculate the cardinality of the set S_n(T,tau) of all permutations in S_n that avoid one pattern from S_4 and a nonempty set of patterns from S_3.

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T. Mansour. 1999-09-02. Permutations avoiding a set of patterns from S_3 and a pattern from S_4. https://arxiv.org/abs/math/9909019

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