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Numbers whose base-4 representation contains exactly three 0's and one 3.
0

%I #10 May 24 2023 00:01:25

%S 192,259,268,304,448,515,524,560,704,769,770,772,776,784,800,832,896,

%T 1031,1035,1037,1038,1043,1052,1059,1068,1073,1074,1076,1080,1091,

%U 1100,1136,1155,1164,1200,1217,1218,1220,1224,1232

%N Numbers whose base-4 representation contains exactly three 0's and one 3.

%t Select[Range[1500],DigitCount[#,4,0]==3&&DigitCount[#,4,3]==1&] (* _Harvey P. Dale_, Jun 01 2012 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_