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 A127747 #4 Mar 31 2012 10:26:06 %S A127747 13,149,1237,12689,345689,1235789 %N A127747 Smallest n-digit emirp (A006567) with strictly increasing (distinct) digits. %Y A127747 Cf. A006567, A031991, A109308, A114018, A127746. %K A127747 fini,full,nonn,base %O A127747 2,1 %A A127747 _Lekraj Beedassy_, Jan 28 2007 %E A127747 Edited and extended by _Ray Chandler_, Jan 30 2007