This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A124483 #4 Jul 12 2020 10:49:35 %S A124483 1,1,2,5,11,32,77,236,616 %N A124483 Number of connected jeu de taquin posets with n elements. %H A124483 Cheryl A. Gann and Robert A. Proctor, <a href="http://lists-of-posets.math.unc.edu/defcnt.html#pstcnts">Poset Counts</a> %H A124483 Robert A. Proctor, <a href="http://www.math.unc.edu/Faculty/rap/JDT.html">Definition of the JDT Property</a> %Y A124483 Cf. A000112, A124480, A124481, A124483. %K A124483 more,nonn %O A124483 1,3 %A A124483 _Franklin T. Adams-Watters_, Nov 03 2006