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Numbers whose base-6 representation has the same number of 1's and 4's.
1

%I #12 Jun 20 2021 15:00:03

%S 0,2,3,5,10,12,14,15,17,18,20,21,23,25,30,32,33,35,40,52,58,60,62,63,

%T 65,70,72,74,75,77,82,84,86,87,89,90,92,93,95,97,102,104,105,107,108,

%U 110,111,113,118,120,122,123,125,126,128,129,131,133,138,140,141,143

%N Numbers whose base-6 representation has the same number of 1's and 4's.

%H Daniel Starodubtsev, <a href="/A039022/b039022.txt">Table of n, a(n) for n = 1..10000</a>

%Y Cf. A007092.

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_