A044887 Numbers having, in base 16, (sum of even run lengths)=(sum of odd run lengths).

4097, 4098, 4099, 4100, 4101, 4102, 4103, 4104, 4105, 4106, 4107, 4108, 4109, 4110, 4111, 4113, 4130, 4147, 4164, 4181, 4198, 4215, 4232, 4249, 4266, 4283, 4300, 4317, 4334, 4351, 4353, 4354, 4355, 4356, 4357, 4358

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Prog

(Python)
from itertools import groupby
def ok(n):
    rl_sums = [0, 0]
    for k, g in groupby(hex(n)[2:]):
        rl = len(list(g))
        rl_sums[rl%2] += rl
    return rl_sums[0] == rl_sums[1]
print(list(filter(ok, range(4359)))) # Michael S. Branicky, Sep 11 2021

Crossrefs

Cf. A104619.

Cf. A044873, A044874, A044875, A044876, A044877, A044878, A044879.

Cf. A044880, A044881, A044882, A044883, A044884, A044885, A044886.

Sequence in context: A017556 A309112 A351311 * A217196 A342685 A342686

Adjacent sequences: A044884 A044885 A044886 * A044888 A044889 A044890

Keyword

nonn,base

Author

Clark Kimberling

Status

approved