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 A116724 #5 Oct 02 2010 03:00:00 %S A116724 0,1,2,4,7,8,9,13,16,28,54,129,190 %N A116724 Erroneous version of A076680. %D A116724 From a posting to the Math Fun and Sequence Fans mailing lists, Sep 14 2010. %K A116724 dead %O A116724 1,3