login
Numbers whose base-11 representation has the same nonzero number of 0's and 7's.
0

%I #12 Jun 30 2021 04:05:30

%S 77,128,198,249,319,370,440,491,561,612,682,733,803,848,849,850,851,

%T 852,853,855,856,857,858,869,880,891,902,913,935,946,957,975,1045,

%U 1096,1166,1217,1287,1349,1360,1371,1382,1393,1404,1409,1410,1411

%N Numbers whose base-11 representation has the same nonzero number of 0's and 7's.

%t Select[Range[1500],DigitCount[#,11,0]==DigitCount[#,11,7]>0&] (* _Harvey P. Dale_, Jul 19 2018 *)

%K nonn,base,easy

%O 1,1

%A _Olivier GĂ©rard_