%I #22 Apr 22 2023 17:54:12

%S 2815,3007,3055,3067,3070,3775,3823,3835,3838,4015,4027,4030,4075,

%T 4078,4090,6911,7103,7151,7163,7166,7871,7919,7931,7934,8111,8123,

%U 8126,8171,8174,8186,8959,9151,9199,9211,9214,9983

%N Numbers whose base-4 representation contains exactly two 2's and four 3's.

%t Select[Range[12000], DigitCount[#,4,2] == 2 && DigitCount[#,4,3] == 4&] (* _Harvey P. Dale_, Jan 05 2011 *)

%Y Cf. A007090.

%K nonn,base,easy

%O 1,1

%A _Clark Kimberling_