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 A097389 #3 Mar 30 2012 17:27:19 %S A097389 1,3,4,5,6,7,8,9,14,15,18,19,20,21,22,23,24,25 %N A097389 Numbers that appear in A097390. %C A097389 All numbers listed appear an infinite number of times except 1, which appears once. %Y A097389 Cf. A005224, A096828, A097390, A096829, A097395. %K A097389 fini,full,nonn,word %O A097389 1,2 %A A097389 _Matthew Vandermast_, Aug 13 2004