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 A145719 #1 Jun 01 2010 03:00:00 %S A145719 1,21,56,0,42,0,0,48 %N A145719 Erroneous version of A031963. %D A145719 H. Ferguson and C. Ferguson, Eightfold way: the sculpture, pp. 133-173 in S. Levy, ed., The Eightfold Way, Cambridge, 1999. %K A145719 dead %O A145719 1,2