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 A161414 #2 Mar 30 2012 17:34:00 %S A161414 2,3,5,19,29 %N A161414 Primes in A161412. %Y A161414 Cf. A139253, A161412, A161423. %K A161414 more,nonn %O A161414 1,1 %A A161414 _Omar E. Pol_, Jun 10 2009