Kuszmaul W. Counting Permutations Modulo Pattern-Replacement Equivalences for Three-Letter Patterns. Electron. J. Combin. [Internet]. 2013Oct.28 [cited 2026Jun.6];20(4):#P10. Available from: https://www.combinatorics.org/ojs/index.php/eljc/article/view/v20i4p10