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 A142861 #6 May 31 2018 05:11:30 %S A142861 0,1,2,15,54,315,1715,11862,91123,847023 %N A142861 Number of nontrivially fully gated graphs on n nodes. %H A142861 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. %Y A142861 Cf. A142859, A142860. %K A142861 nonn,more %O A142861 5,3 %A A142861 _N. J. A. Sloane_, Oct 01 2008