Bostan, Alin, Andrew Elvey Price, Anthony John Guttmann, and Jean-Marie Maillard. “Stieltjes Moment Sequences for Pattern-Avoiding Permutations”. The Electronic Journal of Combinatorics 27, no. 4 (October 30, 2020): #P4.20. Accessed April 18, 2026. https://www.combinatorics.org/ojs/index.php/eljc/article/view/v27i4p20.