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Numbers whose base-12 representation has the same number of 5's and 6's.
0

%I #11 Jun 27 2021 10:39:00

%S 0,1,2,3,4,7,8,9,10,11,12,13,14,15,16,19,20,21,22,23,24,25,26,27,28,

%T 31,32,33,34,35,36,37,38,39,40,43,44,45,46,47,48,49,50,51,52,55,56,57,

%U 58,59,66,77,84,85,86,87,88,91,92,93,94,95,96,97,98,99,100,103,104

%N Numbers whose base-12 representation has the same number of 5's and 6's.

%t Select[Range[0,200],DigitCount[#,12,5]==DigitCount[#,12,6]&] (* _Harvey P. Dale_, Apr 09 2019 *)

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_