login
Numbers whose base-5 representation contains exactly two 2's and two 3's.
0

%I #13 May 16 2023 22:06:43

%S 318,338,342,438,442,462,943,963,967,1063,1067,1087,1318,1338,1342,

%T 1443,1463,1467,1518,1543,1578,1583,1590,1591,1594,1598,1618,1638,

%U 1642,1663,1667,1678,1683,1690,1691,1694,1698,1702

%N Numbers whose base-5 representation contains exactly two 2's and two 3's.

%t Select[Range[2000],DigitCount[#,5,2]==DigitCount[#,5,3]==2&] (* _Harvey P. Dale_, Dec 11 2017 *)

%Y Cf. A007091.

%K nonn,base

%O 1,1

%A _Clark Kimberling_