## Abstract

In this paper, we make a contribution to the enumeration of permutations avoiding

a quadruples of 4-letter patterns by establishing a Wilf class composed of 19 symmetry classes.

a quadruples of 4-letter patterns by establishing a Wilf class composed of 19 symmetry classes.

Original language | English |
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Pages (from-to) | 79–99 |

Journal | Notes on Number Theory and Discrete Mathematics |

Volume | 23 |

Issue number | 3 |

State | Published - 2017 |