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Numbers whose base-9 representation has the same number of 3's and 5's.
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%I #13 Jun 25 2021 01:43:05

%S 0,1,2,4,6,7,8,9,10,11,13,15,16,17,18,19,20,22,24,25,26,32,36,37,38,

%T 40,42,43,44,48,54,55,56,58,60,61,62,63,64,65,67,69,70,71,72,73,74,76,

%U 78,79,80,81,82,83,85,87,88,89,90,91,92,94,96,97,98,99,100,101,103

%N Numbers whose base-9 representation has the same number of 3's and 5's.

%t Select[Range[0,150],DigitCount[#,9,3]==DigitCount[#,9,5]&] (* _Harvey P. Dale_, Sep 30 2019 *)

%Y Cf. A007095.

%K nonn,base,easy

%O 1,3

%A _Olivier GĂ©rard_