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 A052480 #4 Mar 31 2012 10:32:38 %S A052480 2,3,5,7,11,101,113,131,311,151,181,811,191,911,313,331,353,337,373, %T A052480 733,383,277,727,577,757,787,877,797,977,199,919,991,929,10103,10301, %U A052480 11003,13001,30011,10501,50101,51001,10061,10601,16001,60101 %N A052480 Primes associated with A052507. %K A052480 nonn %O A052480 0,1 %A A052480 _Enoch Haga_, Mar 18 2000