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 A067570 #4 Mar 31 2012 13:50:43 %S A067570 0,1,2,3,4,5,7 %N A067570 Numbers n such that A000009(n) divides A067553(n). %Y A067570 Cf. A067553, A000009. %K A067570 more,nonn %O A067570 1,3 %A A067570 _Naohiro Nomoto_, Jan 30 2002