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Numbers whose base-11 representation has the same number of 4's and 6's.
0

%I #14 Jun 26 2021 06:48:08

%S 0,1,2,3,5,7,8,9,10,11,12,13,14,16,18,19,20,21,22,23,24,25,27,29,30,

%T 31,32,33,34,35,36,38,40,41,42,43,50,55,56,57,58,60,62,63,64,65,70,77,

%U 78,79,80,82,84,85,86,87,88,89,90,91,93,95,96,97,98,99,100,101,102

%N Numbers whose base-11 representation has the same number of 4's and 6's.

%t Select[Range[0,110],DigitCount[#,11,4]==DigitCount[#,11,6]&] (* _Harvey P. Dale_, Sep 21 2011 *)

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_