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 A352184 #9 Mar 10 2022 08:27:58 %S A352184 1,2,5,14,50,182,833,4160,25080 %N A352184 Coxeter-Catalan numbers for the Coxeter groups A_0, A_1, A_2, A_3 = D_3, D_4, D_5, E_6, E_7, E_8. %H A352184 Drew Armstrong, <a href="https://bookstore.ams.org/cdn-1646214571586/memo-202-949/50">Generalized Noncrossing Partitions and Combinatorics of Coxeter Groups</a>, Mem. Amer. Math. Soc. 202 (2009), no. 949, x+159. MR 2561274 16. See Table 2.8. %H A352184 Drew Armstrong, <a href="https://arxiv.org/abs/math/0611106">Generalized Noncrossing Partitions and Combinatorics of Coxeter Groups</a>, arXiv:math/0611106 [math.CO], 2006-2007. %Y A352184 Cf. A000108, A051924. %K A352184 nonn,fini,full %O A352184 0,2 %A A352184 _N. J. A. Sloane_, Mar 09 2022