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 A179507 #3 Mar 31 2012 10:26:16
%S A179507 10011101,1021,10321,102043,1015423,10224563,10243657,1012356487,
%T A179507 10124389567
%N A179507 Smallest emirp with a base-10 digit set of {0,1,..,n}.
%C A179507 Smallest member of A006567 using each of the digits from 0 to n at least once, and none of the digits from n+1 up to 9.
%Y A179507 Cf. A099182, A158707
%K A179507 base,fini,full,nonn
%O A179507 1,1
%A A179507 _Lekraj Beedassy_, Jul 17 2010
%E A179507 Definition rephrased by _R. J. Mathar_, Jul 20 2010