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%I #13 Aug 27 2023 17:06:39
%S 85,277,325,337,340,343,349,373,469,853,1045,1093,1105,1108,1111,1117,
%T 1141,1237,1285,1297,1300,1303,1309,1333,1345,1348,1351,1357,1360,
%U 1363,1372,1375,1393,1396,1399,1405,1477,1489,1492
%N Numbers whose base-4 representation contains exactly four 1's and no 2's.
%t Select[Range[1500],DigitCount[#,4,1]==4&&DigitCount[#,4,2]==0&] (* _Harvey P. Dale_, Aug 27 2023 *)
%Y Cf. A007090.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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