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%I #10 Jun 18 2021 23:03:47
%S 16,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,35,36,37,38,39,40,
%T 41,42,43,44,45,46,47,48,49,50,52,53,54,55,56,57,58,59,60,61,62,63,64,
%U 65,66,67,69,70,71,72,73,74,75,76,77,78,79
%N Numbers whose base-16 representation has an even 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 == 0
%o print(list(filter(ok, range(1, 80)))) # _Michael S. Branicky_, Jun 18 2021
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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