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 A139529 #2 Mar 31 2012 10:22:09
%S A139529 0,1,2,4,6,7,9,11,14,15,16,17,22,25,27,29,30,31,34,35,36,41,42,44,45,
%T A139529 46,50,51,57,59,60,64,66,67,69,70,72,74,77,80,84,85,92,94,95,97,99,
%U A139529 101,106,111,114,116,121,126,127,129,132,134,135,137,140,144,146,147,150,151
%N A139529 Numbers n such that numbers 24n+13 are primes.
%t A139529 a = {}; Do[If[PrimeQ[24 n + 13], AppendTo[a, n]], {n, 0, 200}]; a
%K A139529 nonn
%O A139529 1,3
%A A139529 _Artur Jasinski_, Apr 25 2008