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%I #11 Apr 24 2021 20:46:12
%S 273,1002,1731,2217,2298,2379,2433,2442,2451,2457,2458,2459,2461,2462,
%T 2463,2464,2465,2469,2478,2487,2496,2505,2541,2622,2703,2784,2865,
%U 3189,3918,4647,5376,6105,6834,7563,8292,8778,8859
%N Numbers having three 3's in base 9.
%t Select[Range[9000],DigitCount[#,9,3]==3&] (* _Harvey P. Dale_, Dec 17 2011 *)
%Y Cf. A007095.
%K nonn,base
%O 1,1
%A _Clark Kimberling_