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 A204802 #5 Mar 30 2012 17:23:05
%S A204802 5518687,11188759,21825757,22151281,23559247,24788077,27106231,
%T A204802 29384059,29924887,30374251,30781189,31343269,31399237,31641829,
%U A204802 32788543,33777241,33991369,38412637,43418449,51998809,54674857,55630507,57445309,57836563
%N A204802 Primes followed by a gap of 130 = nextprime(p)-p.
%H A204802 <a href="/index/Pri#gaps">Index entries for primes, gaps between</a>.
%o A204802 (PARI) p=0; g=130; for(c=1, 100, while(g+p!=p=nextprime(p+1), ); print1(", "p-g)) \\
%K A204802 nonn
%O A204802 1,1
%A A204802 _M. F. Hasler_, Jan 19 2012