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%I #27 Jun 20 2021 14:54:01
%S 0,1,4,5,11,14,16,17,20,21,27,30,35,39,44,45,50,54,56,57,64,65,68,69,
%T 75,78,80,81,84,85,91,94,99,103,108,109,114,118,120,121,131,135,140,
%U 141,147,151,156,157,175,176,177,180,181,187,190,194,198,200,201,210
%N Numbers whose base-4 representation has the same number of 2's and 3's.
%H Daniel Starodubtsev, <a href="/A039006/b039006.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[Range[0,250],DigitCount[#,4,2]==DigitCount[#,4,3]&] (* _Harvey P. Dale_, Mar 19 2017 *)
%Y Cf. A007090, A160382, A160383, A039005.
%Y Cf. A000302, A052539 (subsequences).
%K nonn,base,easy
%O 1,3
%A _Olivier Gérard_
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