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 A220911 #32 Feb 13 2024 09:33:05 %S A220911 1,1,3,14,84,595,4750,41541,390566,3895957,40835749,446475634, %T A220911 5063092427,59282989982,714081785678,8821809194321,111497133471808, %U A220911 1438600278753167,18914553873419637,253017056507051876,3438813481812082962,47430059072002670873,663174089700143765780 %N A220911 Matchings avoiding the pattern 132. %H A220911 Andrew Elvey Price, <a href="/A220911/b220911.txt">Table of n, a(n) for n = 0..28</a> %H A220911 Jonathan Bloom and Sergi Elizalde, <a href="http://arxiv.org/abs/1211.3442">Pattern avoidance in matchings and partitions</a>, arXiv preprint arXiv:1211.3442 [math.CO], 2012. See Table 1. %Y A220911 Cf. A220910. %K A220911 nonn %O A220911 0,3 %A A220911 _N. J. A. Sloane_, Jan 03 2013 %E A220911 a(11)-a(22) from _Andrew Elvey Price_, Feb 13 2024 %E A220911 a(0)=1 prepended by _Alois P. Heinz_, Feb 13 2024