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 A111476 #4 Dec 05 2013 19:57:05 %S A111476 7,733,733111,7331111111,733111111111111,733111111111111111111, %T A111476 733111111111111111111129129129129129129129, %U A111476 733111111111111111111129129129129129129129123123123123123123123123 %N A111476 Primes pertaining to A111475. %Y A111476 Cf. A111471, A111472, A111473, A111474, A111475. %K A111476 base,nonn %O A111476 1,1 %A A111476 _Amarnath Murthy_, Aug 05 2005 %E A111476 Extended by _Max Alekseyev_, May 19 2009