A043658 - OEIS

%I #12 Apr 25 2021 12:15:18

%S 170,171,172,173,174,175,176,177,178,179,180,181,195,196,198,199,200,

%T 201,202,203,204,205,206,207,208,209,210,212,213,214,215,216,217,218,

%U 219,220,221,222,223,224,226,227,228,229,230

%N Numbers whose base-13 representation has exactly 3 runs.

%t Select[Range[250],Length[Split[IntegerDigits[#,13]]]==3&] (* _Harvey P. Dale_, Feb 05 2012 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_