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 A062526 #3 Mar 30 2012 17:30:32
%S A062526 5,0,3,6,5,4,4,3,2,1,11,15,18,11,6,18,17,19,13,23,9,8,14,21,12,13,26,
%T A062526 28,12,3,8,6,13,24,10,18,12,27,9,27,10,6,9,8,6,14,8,7,9,5,18,16,18,6,
%U A062526 13,35,4,20,13,5,11,4,23,18,12,4,17,8,24,7,22,17,3,26,9,30
%N A062526 9^a(n) is smallest power of 9 containing the string 'n'.
%C A062526 Table[k = 0; While[ StringPosition[ ToString[9^k], ToString[n] ] == {}, k++ ]; k, {n, 0, 75} ]
%Y A062526 Cf. A030000.
%K A062526 base,nonn
%O A062526 0,1
%A A062526 _Robert G. Wilson v_, Jun 24 2001