login
Numbers whose base-5 representation contains exactly two 2's and one 4.
1

%I #16 Dec 07 2024 18:21:15

%S 64,72,112,189,197,237,264,272,289,297,304,309,319,320,321,323,339,

%T 347,352,357,360,361,363,367,439,447,487,512,537,552,557,560,561,563,

%U 567,587,689,697,737,814,822,862,889,897,914,922

%N Numbers whose base-5 representation contains exactly two 2's and one 4.

%H Harvey P. Dale, <a href="/A045286/b045286.txt">Table of n, a(n) for n = 1..3000</a>

%t Select[Range[1000],DigitCount[#,5,2]==2&&DigitCount[#,5,4]==1&] (* _Harvey P. Dale_, Dec 07 2024 *)

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_