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 A277204 #15 Oct 27 2016 08:11:56 %S A277204 1,2,4,11,33,146,846,9807,229972 %N A277204 Number of chromatic symmetric functions realizable from exactly one graph on n vertices. %Y A277204 Cf. A277203. %K A277204 nonn,more %O A277204 1,2 %A A277204 _Sam Heil_ and _Caleb Ji_, Oct 04 2016