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 A136150 #2 Mar 31 2012 10:26:06 %S A136150 2,3,31,23,0,223,233,0,433,3323,0,33223,23333,0,323233,333323,0, %T A136150 3332233,3333233,0,3433333,33323333,0,333333223,333233333,0, %U A136150 3332333233,3333333323,0,33333333223,23333333333,0,333333233323,333333333323,0 %N A136150 Largest prime with digit sum n and maximum digit product (or 0 if no such prime exists). %Y A136150 Cf. A137248. %K A136150 nonn,base %O A136150 2,1 %A A136150 _Lekraj Beedassy_, Mar 16 2008, Apr 05 2008