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 A161760 #4 Aug 13 2012 11:21:54 %S A161760 4,6,8,9,12,34,45,56,78,90,123,234,345,456,567,678,789,890,901,1234, %T A161760 2345,3456,5678,6789,7890,8901,9012,12345,23456,34567,45678,56789, %U A161760 67890,89012,90123 %N A161760 Composites with consecutive (ascending) digits. %H A161760 R. J. Mathar, <a href="/A161760/b161760.txt">Table of n, a(n) for n = 1..200</a> %Y A161760 A059043 - A006055 - 1 %K A161760 nonn,base %O A161760 1,1 %A A161760 _Claudio Meller_, Jun 18 2009