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 A044964 #5 Mar 30 2012 18:56:49 %S A044964 1,2,3,4,5,6,7,8,9,10,11,12,13,14,16,32,48,64,80,96,112,128,144,160, %T A044964 176,192,208,224,225,226,240,241,242,243,244,245,246,247,248,249,250, %U A044964 251,252,253,254,256,257,271,273,286,289,301,305 %N A044964 Numbers with no two equally numerous base 15 digits. %K A044964 nonn,base %O A044964 1,2 %A A044964 _Clark Kimberling_