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%I #14 Jul 01 2021 03:38:08
%S 1,5,21,35,44,50,56,75,78,85,99,108,114,120,135,141,147,156,177,180,
%T 198,201,210,216,225,228,283,286,295,301,310,313,331,334,341,355,364,
%U 370,376,391,397,403,412,433,436,454,457,466,472,481,484,535,541,565
%N Numbers whose base-4 representation has the number of 0's, 2's and 3's.
%t Select[Range[600],DigitCount[#,4,0]==DigitCount[#,4,2]==DigitCount[#,4,3]&] (* _Harvey P. Dale_, May 30 2017 *)
%Y Cf. A007090.
%K nonn,base,easy
%O 1,2
%A _Olivier Gérard_
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