A039185 - OEIS

%I #9 Jun 26 2021 06:47:51

%S 0,1,2,4,5,6,8,9,10,11,12,13,15,16,17,19,20,21,22,23,24,26,27,28,30,

%T 31,32,40,44,45,46,48,49,50,52,53,54,55,56,57,59,60,61,63,64,65,66,67,

%U 68,70,71,72,74,75,76,80,88,89,90,92,93,94,96,97,98,99,100,101,103

%N Numbers whose base-11 representation has the same number of 3's and 7's.

%K nonn,base,easy

%O 1,3

%A _Olivier Gérard_