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 A273000 #7 May 13 2016 05:26:01
%S A273000 1,1272,12183,24928,12183,1272,1
%N A273000 The E_6-Eulerian numbers.
%C A273000 a(n) is the number of elements of the Weyl group E_6 that have a descent set of size n.
%C A273000 Sum_{n=0..6} a(n) = 51840, which is the order of the group E_6.
%D A273000 T. K. Petersen, Eulerian Numbers, Birkhauser, 2015, Table 11.5.
%Y A273000 Cf. A008292, A060187, A066094.
%K A273000 nonn,fini,full
%O A273000 0,2
%A A273000 _Tom Edgar_, May 12 2016