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 A044957 #7 Jun 22 2012 18:02:35 %S A044957 1,2,3,4,5,6,7,9,18,27,36,45,54,63,64,65,72,73,74,75,76,77,78,79,81, %T A044957 82,89,91,97,100,105,109,113,118,121,127,128,130,137,138,144,145,146, %U A044957 147,148,149,150,151,154,155,162,164,170,173,178 %N A044957 Numbers with no two equally numerous base 8 digits. %H A044957 Harvey P. Dale, <a href="/A044957/b044957.txt">Table of n, a(n) for n = 1..1000</a> %t A044957 Select[Range[200],Max[Transpose[Tally[Select[DigitCount[#,8],#>0&]]][[2]]]==1&] (* _Harvey P. Dale_, Jun 22 2012 *) %K A044957 nonn,base %O A044957 1,2 %A A044957 _Clark Kimberling_