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 A364030 #24 Jul 26 2023 17:43:39 %S A364030 1,1,4,17,78,382,1975,10663,59526,340802,1988575,11771619,70465201, %T A364030 425572175,2589083577,15849320663,97548380006,603277351699, %U A364030 3747168602548,23367880883262,146262143795248,918597886652632,5787577778959613,36572319110701681,231742772456205071 %N A364030 Number of Dyck paths of semilength 2n having exactly n peaks of maximal height. %H A364030 Alois P. Heinz, <a href="/A364030/b364030.txt">Table of n, a(n) for n = 0..100</a> %F A364030 a(n) = A152879(2n,n). %e A364030 a(0) = 1: (), the empty Dyck path. %e A364030 a(1) = 1: //^\\. %e A364030 a(2) = 4: ///^\/^\\\, //^\\//^\\, //^\/^\\/\, /\//^\/^\\. %Y A364030 Cf. A000108, A152879. %K A364030 nonn %O A364030 0,3 %A A364030 _Alois P. Heinz_, Jul 25 2023