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Numbers having four 1's in base 4.
1

%I #19 Apr 24 2021 01:59:49

%S 85,277,325,337,340,342,343,345,349,357,373,405,469,597,853,1045,1093,

%T 1105,1108,1110,1111,1113,1117,1125,1141,1173,1237,1285,1297,1300,

%U 1302,1303,1305,1309,1317,1333,1345,1348,1350,1351

%N Numbers having four 1's in base 4.

%H Harvey P. Dale, <a href="/A043340/b043340.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Range[1500],DigitCount[#,4,1]==4&] (* _Harvey P. Dale_, Sep 30 2011 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_