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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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
Table of n, a(n) for n=1..7.
Index entries for sequences related to necklaces
CROSSREFS
Sequence in context: A247284 A069061 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 May 13 09:49 EDT 2024. Contains 372504 sequences. (Running on oeis4.)