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Numbers whose base-10 representation has the same number of 2's and 4's.
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%I #10 Jun 26 2021 01:54:28

%S 0,1,3,5,6,7,8,9,10,11,13,15,16,17,18,19,24,30,31,33,35,36,37,38,39,

%T 42,50,51,53,55,56,57,58,59,60,61,63,65,66,67,68,69,70,71,73,75,76,77,

%U 78,79,80,81,83,85,86,87,88,89,90,91,93,95,96,97,98,99,100,101,103

%N Numbers whose base-10 representation has the same number of 2's and 4's.

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_