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%I #10 Jun 18 2021 23:03:56
%S 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,17,34,51,68,85,102,119,136,153,
%T 170,187,204,221,238,255,257,258,259,260,261,262,263,264,265,266,267,
%U 268,269,270,271,273,288,289,291,292,293,294,295
%N Numbers whose base-16 representation has an odd number of runs.
%o (Python)
%o from itertools import groupby
%o def ok(n): return len(list(g for k, g in groupby(hex(n)[2:])))%2 == 1
%o print(list(filter(ok, range(1, 296)))) # _Michael S. Branicky_, Jun 18 2021
%K nonn,base
%O 1,2
%A _Clark Kimberling_
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