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A045669 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reversed complement, inequivalent to reverse and complement. 2
0, 0, 0, 12, 32, 120, 288, 784, 1792, 4284, 9600, 21824, 47520, 104832, 225792, 487260, 1040384, 2219520, 4699296, 9942016, 20930400, 43994748, 92184576, 192843776, 402451200, 838655400, 1744404480, 3623423328, 7515275040 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..28.

CROSSREFS

Equals 2*n*A045687(n).

Sequence in context: A102091 A303079 A268769 * A045660 A192213 A050690

Adjacent sequences:  A045666 A045667 A045668 * A045670 A045671 A045672

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified March 25 01:17 EDT 2019. Contains 321450 sequences. (Running on oeis4.)