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

%I #11 May 23 2023 05:41:37

%S 768,1027,1036,1072,1216,1792,2051,2060,2096,2240,2816,3073,3074,3076,

%T 3080,3088,3104,3136,3200,3328,3584,4103,4107,4109,4110,4115,4124,

%U 4131,4140,4145,4146,4148,4152,4163,4172,4208,4227

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

%t Select[Range[5000],DigitCount[#,4,0]==4&&DigitCount[#,4,3]==1&] (* _Harvey P. Dale_, Jun 12 2012 *)

%Y Cf. A007090.

%K nonn,base

%O 1,1

%A _Clark Kimberling_