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A043619 Numbers n such that base 7 representation has exactly 4 runs. 0

%I

%S 350,352,353,354,355,356,357,358,360,361,362,363,364,365,366,368,369,

%T 370,371,372,373,374,376,377,378,379,380,381,382,384,385,386,387,388,

%U 389,390,442,443,444,445,446,447,448,450,451

%N Numbers n such that base 7 representation has exactly 4 runs.

%t Select[Range[500],Length[Split[IntegerDigits[#,7]]]==4&] (* _Harvey P. Dale_, Jun 25 2020 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified October 31 11:33 EDT 2020. Contains 338101 sequences. (Running on oeis4.)