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Numbers whose base-12 representation has the same nonzero number of 6's and 11's.
0

%I #13 Jul 01 2021 00:03:00

%S 83,138,227,282,371,426,515,570,659,714,803,858,875,887,899,911,923,

%T 935,959,971,983,995,996,997,998,999,1000,1001,1003,1004,1005,1006,

%U 1091,1146,1235,1290,1379,1434,1523,1578,1590,1602,1614,1626,1638

%N Numbers whose base-12 representation has the same nonzero number of 6's and 11's.

%t Select[Range[2000],DigitCount[#,12,6]==DigitCount[#,12,11]>0&] (* _Harvey P. Dale_, Nov 02 2011 *)

%K nonn,base,easy

%O 1,1

%A _Olivier GĂ©rard_