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 A300449 #6 Apr 16 2018 18:47:24 %S A300449 -56,-28,-18,-16,-12,-10,-8,-6,-4,-2,0,1,2 %N A300449 List of values of Euler characteristic of uniform star polyhedra. %H A300449 Wikipedia, <a href="https://en.wikipedia.org/wiki/Euler_characteristic">Euler characteristic</a> %H A300449 Wikipedia, <a href="https://en.wikipedia.org/wiki/List_of_uniform_polyhedra#Uniform_star_polyhedra">List of uniform polyhedra - Uniform star polyhedra</a> %Y A300449 Cf. A128112, A128113, A128114, A128914, A300450. %K A300449 sign,fini,full %O A300449 1,1 %A A300449 _Felix Fröhlich_, Mar 06 2018