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%I #10 Sep 11 2021 10:46:51
%S 4097,4098,4099,4100,4101,4102,4103,4104,4105,4106,4107,4108,4109,
%T 4110,4111,4113,4130,4147,4164,4181,4198,4215,4232,4249,4266,4283,
%U 4300,4317,4334,4351,4353,4354,4355,4356,4357,4358
%N Numbers having, in base 16, (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(hex(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(4359)))) # _Michael S. Branicky_, Sep 11 2021
%Y Cf. A104619.
%Y Cf. A044873, A044874, A044875, A044876, A044877, A044878, A044879.
%Y Cf. A044880, A044881, A044882, A044883, A044884, A044885, A044886.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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