INFORMAZIONI SU QUESTO ARTICOLO
Pubblicato online: 14 lug 2017
Pagine: 1 - 10
Ricevuto: 07 giu 2016
DOI: https://doi.org/10.1515/puma-2015-0018
Parole chiave
© 2017
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
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.