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A007977
Modified de Bruijn sequences: max. length of binary necklace in which no n-bit word appears twice.
0
1, 4, 6, 13, 20, 39, 70
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
Index entries for sequences related to necklaces
CROSSREFS
Sequence in context:
A069061
A373945
A088811
*
A013122
A012964
A284798
Adjacent sequences:
A007974
A007975
A007976
*
A007978
A007979
A007980
KEYWORD
nonn
AUTHOR
Warren D. Smith
STATUS
approved
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Last modified September 18 11:06 EDT 2024. Contains 375999 sequences. (Running on oeis4.)