Fazel-Rezai V. Equivalence Classes of Permutations Modulo Replacements Between 123 and Two-Integer Patterns. Electron. J. Combin. [Internet]. 2014Jun.9 [cited 2026Mar.30];21(2):P2.47. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v21i2p47