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%I #14 Jun 30 2021 01:54:47
%S 52,68,133,149,214,230,295,311,376,392,412,421,430,439,448,466,468,
%T 469,470,471,472,474,476,484,538,554,572,581,590,599,608,612,613,614,
%U 615,616,618,620,626,644,700,716,781,797,862,878,943,959,1024,1040
%N Numbers whose base-9 representation has the same nonzero number of 5's and 7's.
%t Select[Range[1100],DigitCount[#,9,5]==DigitCount[#,9,7]>0&] (* _Harvey P. Dale_, Oct 09 2011 *)
%Y Cf. A007095.
%K nonn,base,easy
%O 1,1
%A _Olivier Gérard_