A039546 - OEIS

%I #12 Jul 01 2021 00:02:39

%S 81,114,225,258,369,402,513,546,657,690,801,834,873,885,897,909,921,

%T 933,957,969,972,973,974,975,976,977,979,980,982,983,993,1005,1089,

%U 1122,1233,1266,1302,1314,1326,1338,1350,1362,1368,1369,1370,1371

%N Numbers whose base-12 representation has the same nonzero number of 6's and 9's.

%t Select[Range[1500],DigitCount[#,12,6]==DigitCount[#,12,9]>0&] (* _Harvey P. Dale_, Jun 10 2013 *)

%K nonn,base,easy

%O 1,1

%A _Olivier Gérard_