%I #14 May 21 2023 11:05:23
%S 43775,43967,44015,44027,44030,44735,44783,44795,44798,44975,44987,
%T 44990,45035,45038,45050,47807,47855,47867,47870,48047,48059,48062,
%U 48107,48110,48122,48815,48827,48830,48875,48878
%N Numbers whose base-4 representation contains exactly four 2's and four 3's.
%t Select[Range[50000],Rest[Most[DigitCount[#,4]]]=={4,4}&] (* _Harvey P. Dale_, Feb 05 2011 *)
%Y Cf. A007090.
%K nonn,base
%O 1,1
%A _Clark Kimberling_