FindStat-组合统计查找器,<a href=“https://www.findstat.org/CollectionsDatabase/DyckPaths网站/“>Dyck路径</a>.
A.卡特伦,<A href=“https://web.archive.org/web/20070202072844/http://ndirty.cute.fi/~卡图/马提卡/Nekomorphisms/a014486.ps.gz“>初始术语插图,大小n=7</a>.
A.卡特伦,<A href=“http://oeis.org/wiki/Catalan_Automorphisms“>加泰罗尼亚自形</a>.
Peter Luschny,<a href=“/A063171号/a063171_1.txt“>Knuth算法P和U的Python实现.</a>.
Indranil Ghosh,<a href=“/A063171号/a063171.txt“>用于计算此序列的Python程序</a>.
Paolo Xausa,<a href=“/A063171号/a063171_5.txt“>Knuth算法P和U的Mathematica实现</a>.