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 A266757 #8 Jul 16 2019 02:15:36 %S A266757 1,1,4,31,367 %N A266757 Erroneous version of A005263. %C A266757 Included in accordance with OEIS policy of including published but erroneous sequences so as to give links to the correct versions. %H A266757 V. Kurauskas, <a href="http://arxiv.org/abs/1504.08107">On graphs containing few disjoint excluded minors. Asymptotic number and structure of graphs containing few disjoint minors K_4</a>, arXiv preprint arXiv:1504.08107 [math.CO], V1, Apr 30, 2015. %K A266757 dead %O A266757 1,3