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 A024766 #5 Mar 30 2012 18:35:23 %S A024766 2,3,5,21,25,31,35,51,211,215,251,255,351,515,2115,2151,2155,2511, %T A024766 2551,2555,3515,5155,21155,21515,21551,21555,25115,25515,35155,51551, %U A024766 51555,215515,215555,515511,515551,2155555 %N A024766 Every prefix prime in base 6 (written in base 6). %K A024766 nonn,base,fini,full %O A024766 1,1 %A A024766 _David W. Wilson_