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

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79054In 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.CombinatoricsPermutations avoiding a set of patterns from S_3 and a pattern from S_4text