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 A089236 #3 Feb 24 2006 03:00:00 %S A089236 251,111497,74453,1397609,642427,5321191,23921299,55410683 %N A089236 Duplicate of A052239. %K A089236 dead %O A089236 1,1