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%I #13 Jun 25 2021 01:42:33
%S 0,2,3,5,6,7,8,13,18,20,21,23,24,25,26,27,29,30,32,33,34,35,37,45,47,
%T 48,50,51,52,53,54,56,57,59,60,61,62,63,65,66,68,69,70,71,72,74,75,77,
%U 78,79,80,85,103,112,117,119,120,122,123,124,125,130,139,148,157,162
%N Numbers whose base-9 representation has the same number of 1's and 4's.
%t Select[Range[0,200],DigitCount[#,9,1]==DigitCount[#,9,4]&] (* _Harvey P. Dale_, Dec 26 2014 *)
%Y Cf. A007095.
%K nonn,base,easy
%O 1,2
%A _Olivier Gérard_