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%I #10 Jun 18 2021 22:35:49
%S 4,6,7,8,9,11,12,13,14,16,20,22,23,26,31,32,37,40,41,43,47,48,53,58,
%T 60,61,62,64,68,70,71,72,73,75,76,77,78,80,84,86,87,90,95,97,98,99,
%U 100,102,103,106,108,109,110,113,114,115,116,118
%N Numbers whose base-4 representation has an even number of runs.
%t Select[Range[120],EvenQ[Length[Split[IntegerDigits[#,4]]]]&] (* _Harvey P. Dale_, Oct 19 2018 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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