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 A052431 #36 Feb 16 2025 08:32:42 %S A052431 1,2,4,11,33,148,906,8887,136756,3269264,115811998,5855499195, %T A052431 410580177259 %N A052431 Number of perfect simple undirected graphs on n nodes. %D A052431 A. Brandstaedt, V. B. Le and J. P. Spinrad, Graph Classes: A Survey, SIAM Publications, 1999. %H A052431 S. Hougardy, <a href="http://www.or.uni-bonn.de/~hougardy/">Home Page</a> %H A052431 S. Hougardy, <a href="http://dx.doi.org/10.1016/j.disc.2006.05.021">Classes of perfect graphs</a>, Discr. Math. 306 (2006), 2529-2571. %H A052431 Florian Kohl, McCabe Olsen, Raman Sanyal, <a href="https://arxiv.org/abs/1906.01469">Unconditional reflexive polytopes</a>, arXiv:1906.01469 [math.CO], 2019. Also Discrete and Computational Geom., 64:2 (2020), 427-452. %H A052431 Brendan McKay, <a href="http://dcsmail.anu.edu.au/pipermail/nauty-list/2002/000031.html">Perfect graphs</a> %H A052431 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/PerfectGraph.html">Perfect Graph</a> %Y A052431 Cf. A052433. %K A052431 nonn,hard,more %O A052431 1,2 %A A052431 _Eric W. Weisstein_ %E A052431 McKay link, giving more terms, supplied by _Vladeta Jovovic_, Jan 31 2003 %E A052431 a(12) added by _N. J. A. Sloane_ from the Hougardy paper, Oct 17 2006 %E A052431 a(13) added by _Brendan McKay_, Mar 11 2018