A044978 - OEIS

%I #11 Jul 26 2023 01:38:49

%S 85,91,93,109,111,117,257,259,265,275,277,281,285,289,291,301,307,309,

%T 329,331,335,339,343,345,353,357,369,379,381,387,409,415,417,433,435,

%U 441,499,517,523,525,571,577,579,595,597,603

%N Numbers whose base-3 representation contains exactly two 0's and three 1's.

%t Select[Range[700],DigitCount[#,3,0]==2&&DigitCount[#,3,1]==3&] (* _Harvey P. Dale_, Mar 26 2021 *)

%Y Cf. A007089.

%K nonn,base

%O 1,1

%A _Clark Kimberling_