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 A093815 #11 Oct 14 2019 04:29:42 %S A093815 1,4,6,28,80,409,2010,13314,99363,919304 %N A093815 Erroneous version of A142859. %C A093815 The old entry with this sequence number was a duplicate of A093466. %H A093815 C. J. Colbourn and C. Huybrechts, <a href="https://doi.org/10.1016/j.disc.2007.09.039">Fully gated graphs,: recognition and convex operations</a>, Discrete Math., 308 (2008), 5184-5195. %K A093815 dead %O A093815 5,2