A039079 - OEIS

%I #14 Jun 25 2021 01:43:28

%S 1,2,4,5,6,7,8,10,11,13,14,15,16,17,19,20,22,23,24,25,26,27,37,38,40,

%T 41,42,43,44,46,47,49,50,51,52,53,55,56,58,59,60,61,62,64,65,67,68,69,

%U 70,71,73,74,76,77,78,79,80,84,91,92,94,95,96,97,98,100,101,103,104

%N Numbers whose base-9 representation has the same number of 0's and 3's.

%t Select[Range[200],DigitCount[#,9,0]==DigitCount[#,9,3]&] (* _Harvey P. Dale_, Sep 18 2016 *)

%Y Cf. A007095.

%K nonn,base,easy

%O 1,2

%A _Olivier Gérard_