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%I #10 Jun 18 2021 19:58:46
%S 1,2,4,8,10,11,13,15,16,19,20,21,23,26,28,29,31,35,37,38,40,42,43,45,
%T 49,51,52,55,56,58,62,63,66,68,71,73,74,75,77,80,82,83,85,89,91,92,94,
%U 96,97,100,101,102,104,107,109,110,112,116,118
%N Numbers whose base-3 representation has an odd number of runs.
%t Select[Range[200],OddQ[Length[Split[IntegerDigits[#,3]]]]&] (* _Harvey P. Dale_, Mar 05 2020 *)
%K nonn,base
%O 1,2
%A _Clark Kimberling_
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