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Numbers whose base-10 representation has the same number of 4's and 6's.
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%I #10 Jun 26 2021 01:53:43

%S 0,1,2,3,5,7,8,9,10,11,12,13,15,17,18,19,20,21,22,23,25,27,28,29,30,

%T 31,32,33,35,37,38,39,46,50,51,52,53,55,57,58,59,64,70,71,72,73,75,77,

%U 78,79,80,81,82,83,85,87,88,89,90,91,92,93,95,97,98,99,100,101,102

%N Numbers whose base-10 representation has the same number of 4's and 6's.

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_