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Numbers whose base-12 representation has the same number of 1's and 6's.
0

%I #12 Jun 26 2021 15:48:36

%S 0,2,3,4,5,7,8,9,10,11,18,24,26,27,28,29,31,32,33,34,35,36,38,39,40,

%T 41,43,44,45,46,47,48,50,51,52,53,55,56,57,58,59,60,62,63,64,65,67,68,

%U 69,70,71,73,84,86,87,88,89,91,92,93,94,95,96,98,99,100,101,103,104

%N Numbers whose base-12 representation has the same number of 1's and 6's.

%t Select[Range[0,120],DigitCount[#,12,1]==DigitCount[#,12,6]&] (* _Harvey P. Dale_, Jul 01 2017 *)

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_