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 A135584 #7 Aug 26 2016 22:56:11 %S A135584 3,3,3,59,11,17,29,11,71,71,23,11,29,29,11,83,3,11,281,11,101,71,23, %T A135584 257,401,293,107,293,53,11,113,251,47,587,23,179,389,59,173,17,1427, %U A135584 83,431,53,563,593,41,47,239,383,431,1181,701,971,149,593,569,149,191,1973 %N A135584 Duplicate of A124013. %K A135584 dead %O A135584 1,1