A043670 - OEIS

%I #11 Apr 25 2021 12:13:40

%S 226,227,228,229,230,231,232,233,234,235,236,237,238,239,255,256,258,

%T 259,260,261,262,263,264,265,266,267,268,269,270,271,272,274,275,276,

%U 277,278,279,280,281,282,283,284,285,286,287

%N Numbers whose base-15 representation has exactly 3 runs.

%t Select[Range[300],Length[Split[IntegerDigits[#,15]]]==3&] (* _Harvey P. Dale_, May 24 2016 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_