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%I #10 Sep 14 2023 08:10:59
%S 2,6,8,9,11,14,18,22,24,25,27,30,32,33,35,36,37,39,44,45,47,50,54,56,
%T 57,59,62,66,70,72,73,75,78,82,86,88,89,91,94,96,97,99,100,101,103,
%U 108,109,111,114,118,120,121,123,126,128,129
%N Numbers with a single 2 in their base 4 expansion.
%H Seiichi Manyama, <a href="/A023714/b023714.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[ Range[ 132 ], (Count[ IntegerDigits[ #, 4 ], 2 ]==1)& ]
%K nonn,base,easy
%O 1,1
%A _Olivier Gérard_