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A043416 Numbers having four 5's in base 7. 0

%I

%S 2000,4401,6802,9203,11604,12290,12633,12976,13319,13662,13760,13809,

%T 13858,13907,13956,13970,13977,13984,13991,13998,14000,14001,14002,

%U 14003,14004,14006,14012,14054,14348,16406,18807

%N Numbers having four 5's in base 7.

%t Select[Range[20000],DigitCount[#,7,5]==4&] (* _Harvey P. Dale_, May 16 2019 *)

%Y Cf. A007093.

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified September 26 02:27 EDT 2021. Contains 347664 sequences. (Running on oeis4.)