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Numbers whose base-5 representation contains exactly two 3's and no 4's.
0

%I #16 May 16 2023 22:07:52

%S 18,43,68,78,83,88,90,91,92,143,168,193,203,208,213,215,216,217,268,

%T 293,318,328,333,338,340,341,342,378,383,388,390,391,392,403,408,413,

%U 415,416,417,428,433,438,440,441,442,450,451,452

%N Numbers whose base-5 representation contains exactly two 3's and no 4's.

%t Select[Range[500],DigitCount[#,5,3]==2&&DigitCount[#,5,4]==0&] (* _Harvey P. Dale_, Jan 24 2013 *)

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_