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 A089176 #6 Jan 09 2009 03:00:00 %S A089176 2,7,23,43,47,61,73,79,97,151,167,173,223,241,277,313,331,349,359,367 %N A089176 Duplicate of A049232. %K A089176 dead %O A089176 1,1