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Numbers whose base-8 representation has the same number of 3's and 4's.
0

%I #12 Jun 20 2021 15:45:53

%S 0,1,2,5,6,7,8,9,10,13,14,15,16,17,18,21,22,23,28,35,40,41,42,45,46,

%T 47,48,49,50,53,54,55,56,57,58,61,62,63,64,65,66,69,70,71,72,73,74,77,

%U 78,79,80,81,82,85,86,87,92,99,104,105,106,109,110,111,112,113,114

%N Numbers whose base-8 representation has the same number of 3's and 4's.

%t Select[Range[0,150],DigitCount[#,8,3]==DigitCount[#,8,4]&] (* _Harvey P. Dale_, Mar 21 2012 *)

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_