A007977 Modified de Bruijn sequences: max. length of binary necklace in which no n-bit word appears twice.

1, 4, 6, 13, 20, 39, 70

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