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A333745 Numbers k such that k and k+1 have the same period of binary representation (A007733). 2
1, 90, 104, 164, 286, 457, 665, 702, 740, 836, 975, 1458, 1469, 1628, 2071, 2146, 2625, 2849, 3800, 4441, 4575, 5233, 5284, 5418, 5715, 6039, 6073, 6387, 6458, 6601, 6649, 7384, 7417, 8029, 8521, 9817, 10136, 11306, 11439, 11497, 11642, 12402, 12651, 13050, 13322 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers k such that A007733(k) = A007733(k+1).

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

1 is a term since A007733(1) = A007733(2) = 1.

90 is a term since A007733(90) = A007733(91) = 12.

MATHEMATICA

f[n_] := MultiplicativeOrder[2, n/(2^IntegerExponent[n, 2])]; Select[Range[10^4], f[#] == f[# + 1] &]

CROSSREFS

Cf. A007733, A333746.

Sequence in context: A147676 A045097 A074817 * A043224 A039401 A044004

Adjacent sequences:  A333742 A333743 A333744 * A333746 A333747 A333748

KEYWORD

nonn

AUTHOR

Amiram Eldar, Apr 03 2020

STATUS

approved

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Last modified October 15 21:38 EDT 2021. Contains 348034 sequences. (Running on oeis4.)