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 A099182 #6 Oct 15 2013 22:32:35
%S A099182 101,1021,10223,10243,1015423,10152463,10235647,1012356487,10123457689
%N A099182 a[n] is the smallest prime built up using the sets of digits {0,1},{0,1,2},...,{0,1,2,3,4,5,6,7,8,9}.
%C A099182 Digit 0 may only appear at 2nd or later position.
%K A099182 base,nonn,fini,full
%O A099182 2,1
%A A099182 _Labos Elemer_, Nov 15 2004