%I #12 Jun 30 2021 23:59:03
%S 31,86,175,230,295,307,331,343,355,367,372,373,375,376,377,378,380,
%T 381,382,383,391,403,415,427,463,518,607,662,751,806,895,950,1010,
%U 1022,1032,1033,1035,1036,1037,1038,1040,1041,1042,1043,1046,1058
%N Numbers whose base-12 representation has the same nonzero number of 2's and 7's.
%t Select[Range[1200],DigitCount[#,12,2]==DigitCount[#,12,7]>0&] (* _Harvey P. Dale_, Mar 21 2013 *)
%K nonn,base,easy
%O 1,1
%A _Olivier GĂ©rard_