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 A279208 #11 Dec 23 2016 17:40:28 %S A279208 1,2,5,17,76,499,4132 %N A279208 Number of analytic chord diagrams with n chords, up to symmetry. %H A279208 Étienne Ghys, <a href="http://arxiv.org/abs/1612.06373">A Singular Mathematical Promenade</a>, arXiv:1612.06373 [math.AG], 2016. See p. 252. %Y A279208 Cf. A007769, A054499, A279207. %K A279208 nonn,more %O A279208 1,2 %A A279208 _N. J. A. Sloane_, Dec 23 2016