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Numbers whose base-5 representation has the same number of 0's and 2's.
1

%I #16 Jun 20 2021 16:17:35

%S 1,3,4,6,8,9,10,16,18,19,21,23,24,27,31,33,34,35,41,43,44,46,48,49,51,

%T 53,54,55,65,70,77,81,83,84,85,91,93,94,96,98,99,102,106,108,109,110,

%U 116,118,119,121,123,124,132,136,138,139,142,147,152,156,158,159,160

%N Numbers whose base-5 representation has the same number of 0's and 2's.

%H Daniel Starodubtsev, <a href="/A039008/b039008.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[180],DigitCount[#,5,0]==DigitCount[#,5,2]&] (* _Harvey P. Dale_, May 02 2011 *)

%Y Cf. A007091.

%K nonn,base,easy

%O 1,2

%A _Olivier GĂ©rard_