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Numbers whose base-5 representation contains no 2's and exactly two 3's.
0

%I #14 May 16 2023 22:06:09

%S 18,43,78,83,90,91,94,98,118,143,168,203,208,215,216,219,223,243,378,

%T 383,390,391,394,398,403,408,415,416,419,423,450,451,454,455,456,459,

%U 470,471,474,478,483,490,491,494,498,518,543

%N Numbers whose base-5 representation contains no 2's and exactly two 3's.

%t Select[Range[600],DigitCount[#,5,2]==0&&DigitCount[#,5,3]==2&] (* _Harvey P. Dale_, Jan 18 2017 *)

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_