
1, 2, 4, 5, 9, 10, 18, 20, 21, 37, 41, 42, 74, 82, 84, 85, 149, 165, 169, 170, 298, 330, 338, 340, 341, 597, 661, 677, 681, 682, 1194, 1322, 1354, 1362, 1364, 1365, 2389, 2645, 2709, 2725, 2729, 2730, 4778, 5290, 5418, 5450, 5458, 5460, 5461, 9557
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OFFSET

1,2


COMMENTS

a(n) in binary is either an alternating string of 1's and 0's, or exactly one of the 0's is replaced by 00 (see paper in links).  Chai Wah Wu, Oct 04 2018


LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..10099
Chai Wah Wu, Record values in appending and prepending bitstrings to runs of binary digits, arXiv:1810.02293 [math.NT], 2018


CROSSREFS

Cf. A086638, A175046, A319422, A319424.
Sequence in context: A070924 A266197 A086638 * A265748 A191001 A098845
Adjacent sequences: A319420 A319421 A319422 * A319424 A319425 A319426


KEYWORD

nonn


AUTHOR

N. J. A. Sloane, Sep 23 2018


STATUS

approved

