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 A127748 #4 Mar 31 2012 10:26:06 %S A127748 97,983,9871,98731,986543,9875321 %N A127748 Largest n-digit emirp (A006567) with strictly decreasing (distinct) digits. %Y A127748 Cf. A006567, A030540, A109309, A114019. %Y A127748 Cf. A114019. %K A127748 fini,full,nonn,base %O A127748 2,1 %A A127748 _Lekraj Beedassy_, Jan 28 2007 %E A127748 Edited and extended by _Ray Chandler_, Jan 30 2007