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%I #20 Jun 26 2021 06:45:05
%S 0,5,7,11,15,19,21,29,33,44,45,50,52,55,57,63,68,70,76,83,87,98,99,
%T 104,106,116,128,132,135,140,142,146,150,154,156,163,165,171,176,178,
%U 184,189,194,196,200,204,208,210,220,226,228,245,249,260,261,266,268
%N Numbers whose base-3 representation has the same number of 1's and 2's.
%H Daniel Starodubtsev, <a href="/A039001/b039001.txt">Table of n, a(n) for n = 1..10000</a>
%o (PARI) isok(m) = my(d=digits(m, 3)); #select(x->(x==1), d) == #select(x->(x==2), d); \\ _Michel Marcus_, Mar 23 2020
%Y Cf. A007089, A062756, A081603.
%K nonn,base,easy
%O 1,2
%A _Olivier Gérard_
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