A039019 - OEIS

%I #14 Jun 20 2021 14:59:16

%S 1,2,3,5,7,8,9,11,13,14,15,17,19,20,21,23,24,31,32,33,35,40,43,44,45,

%T 47,49,50,51,53,55,56,57,59,60,67,68,69,71,76,79,80,81,83,85,86,87,89,

%U 91,92,93,95,96,103,104,105,107,112,115,116,117,119,121,122,123,125

%N Numbers whose base-6 representation has the same number of 0's and 4's.

%H Daniel Starodubtsev, <a href="/A039019/b039019.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[200],DigitCount[#,6,0]==DigitCount[#,6,4]&] (* _Harvey P. Dale_, Sep 13 2016 *)

%Y Cf. A007092.

%K nonn,base,easy

%O 1,2

%A _Olivier Gérard_