%I #11 Jun 20 2021 15:03:49
%S 0,2,4,5,6,10,14,16,18,19,20,22,28,30,32,33,34,35,37,39,40,41,42,44,
%T 46,47,48,52,66,70,72,74,75,76,80,87,94,98,100,102,103,104,108,112,
%U 114,116,117,118,120,126,128,130,131,132,133,135,137,138,139,140,142
%N Numbers whose base-7 representation has the same number of 1's and 3's.
%H Daniel Starodubtsev, <a href="/A039036/b039036.txt">Table of n, a(n) for n = 1..10000</a>
%Y Cf. A007093.
%K nonn,base,easy
%O 1,2
%A _Olivier GĂ©rard_
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