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%I #10 Sep 11 2021 10:47:07
%S 9,11,13,133,135,140,143,146,148,150,152,154,156,161,164,166,172,175,
%T 178,180,182,189,196,198,200,202,206,210,212,214,216,218,220,225,228,
%U 230,236,239,241,245,247,2065,2069,2071,2077
%N Numbers having, in base 2, (sum of even run lengths)=(sum of odd run lengths).
%o (Python)
%o from itertools import groupby
%o def ok(n):
%o rl_sums = [0, 0]
%o for k, g in groupby(bin(n)[2:]):
%o rl = len(list(g))
%o rl_sums[rl%2] += rl
%o return rl_sums[0] == rl_sums[1]
%o print(list(filter(ok, range(2078)))) # _Michael S. Branicky_, Sep 11 2021
%Y Cf. A007088.
%Y Cf. A044874, A044875, A044876, A044877, A044878, A044879, A044880.
%Y Cf. A044881, A044882, A044883, A044884, A044885, A044886, A044887.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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