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 A030595 #4 Mar 30 2012 18:56:19 %S A030595 1,10,2,22,3,34,4,11,1,23,8,88,10,106,12,124,14,142,7,13,18,25,2,196, %T A030595 22,214,24,232,26,250,3,9,15,21,27,304,34,328,37,352,40,36,4,54,5,72, %U A030595 49,90,52,108,11,126,58,144,6,101,17,180,1,198,70 %N A030595 Least k such that base 6 representation of n begins at s(k), where s=A030588. %K A030595 nonn %O A030595 1,2 %A A030595 _Clark Kimberling_