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 A077036 #4 Jan 09 2009 03:00:00 %S A077036 11,60,61,1860,1861,1731660,1731661,1499324909460,1499324909461 %N A077036 Duplicate of A076604. %K A077036 dead %O A077036 1,1