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%I #15 Apr 23 2023 21:58:52
%S 343,686,1029,1372,1715,2058,2402,2403,2404,2405,2406,2407,2408,2415,
%T 2422,2429,2436,2443,2450,2499,2548,2597,2646,2695,2744,3087,3430,
%U 3773,4116,4459,4803,4804,4805,4806,4807,4808,4809
%N Numbers whose base-7 representation contains exactly three 0's.
%t Select[Range[5000],DigitCount[#,7,0]==3&] (* _Harvey P. Dale_, Jul 29 2017 *)
%Y Cf. A007093.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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