A039123 - OEIS

%I #10 Jun 26 2021 01:54:14

%S 0,2,3,4,6,7,8,9,15,20,22,23,24,26,27,28,29,30,32,33,34,36,37,38,39,

%T 40,42,43,44,46,47,48,49,51,60,62,63,64,66,67,68,69,70,72,73,74,76,77,

%U 78,79,80,82,83,84,86,87,88,89,90,92,93,94,96,97,98,99,105,125,135

%N Numbers whose base-10 representation has the same number of 1's and 5's.

%K nonn,base,easy

%O 1,2

%A _Olivier Gérard_