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 A286867 #16 Oct 21 2017 22:08:30 %S A286867 1,1,6,44,362,3226,30488,301460,3090020,32618046,345515557 %N A286867 Number of idempotents in the twisted planar partition monoid PP_n^tau. %C A286867 Values were computed using the Semigroups package for GAP. %H A286867 Igor Dolinka, James East, Athanasios Evangelou, Desmond FitzGerald, Nicholas Ham, James Hyde, Nicholas Loughlin, <a href="https://arxiv.org/abs/1507.04838">Idempotent Statistics of the Motzkin and Jones Monoids</a>, arXiv:1507.04838 [math.CO], 2015-2016. %Y A286867 Cf. A225797, A289620. %K A286867 nonn,more %O A286867 0,3 %A A286867 _James East_, Oct 05 2017