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Numbers whose base-9 representation has the same nonzero number of 5's and 8's.
0

%I #13 Jun 30 2021 03:41:27

%S 53,77,134,158,215,239,296,320,377,401,413,422,431,440,449,467,476,

%T 477,478,479,480,481,483,484,539,563,620,644,653,662,671,680,689,693,

%U 694,695,696,697,699,700,707,716,782,806,863,887,944,968,1025,1049

%N Numbers whose base-9 representation has the same nonzero number of 5's and 8's.

%t Select[Range[1100],DigitCount[#,9,5]==DigitCount[#,9,8]>0&] (* _Harvey P. Dale_, May 17 2017 *)

%Y Cf. A007095.

%K nonn,base,easy

%O 1,1

%A _Olivier GĂ©rard_