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 A132257 #3 Mar 11 2014 01:34:09
%S A132257 47,79,131,163,167,223,251,257,317,373,379,401,409,439,467,491,499,
%T A132257 557,587,613,647,673,677,701,709,733,739,761,769,797,853,887,911,919,
%U A132257 941,947,971,977,1009,1039,1069,1097,1123,1129,1181,1187
%N A132257 Isolated primes congruent to {11, 13, 17, 19} mod 30.
%H A132257 C. K. Caldwell, <a href="http://primes.utm.edu">The Prime Pages</a>.
%H A132257 Omar E. Pol, <a href="http://www.polprimos.com">Determinacion geometrica de los numeros primos y perfectos</a>.
%Y A132257 Cf. A007510, A074822, A078857.
%K A132257 easy,nonn
%O A132257 1,1
%A A132257 _Omar E. Pol_, Aug 20 2007