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 A044962 #5 Mar 30 2012 18:56:49 %S A044962 1,2,3,4,5,6,7,8,9,10,11,12,14,28,42,56,70,84,98,112,126,140,154,168, %T A044962 169,170,182,183,184,185,186,187,188,189,190,191,192,193,194,196,197, %U A044962 209,211,222,225,235,239,248,253,261,267,274 %N A044962 Numbers with no two equally numerous base 13 digits. %K A044962 nonn,base %O A044962 1,2 %A A044962 _Clark Kimberling_