%I #12 Jun 20 2021 15:04:10
%S 0,2,3,4,6,12,14,16,17,18,20,21,23,24,25,27,28,30,31,32,34,36,42,44,
%T 45,46,48,54,68,75,82,84,86,87,88,90,96,98,100,101,102,104,110,112,
%U 114,115,116,118,119,121,122,123,125,126,128,129,130,132,134,140,142
%N Numbers whose base-7 representation has the same number of 1's and 5's.
%H Daniel Starodubtsev, <a href="/A039038/b039038.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_