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%I #14 Apr 25 2021 01:26:51
%S 69905,69906,69907,69912,69913,69915,69916,69917,69918,69921,69922,
%T 69923,69924,69926,69927,69932,69933,69934,69937,69938,69939,69940,
%U 69942,69943,69944,69945,69947,70020,70022,70023
%N Numbers whose base-4 representation has exactly 9 runs.
%C Subset of A043876. - _R. J. Mathar_, Oct 20 2008
%t Select[Range[71000],Length[Split[IntegerDigits[#,4]]]==9&] (* _Harvey P. Dale_, May 23 2017 *)
%Y Cf. A007090, A043876.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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