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A066315 Number of aperiodic bracelets (or necklaces) with n red and blue beads such that the beads switch colors when bracelet is turned over. +0
3
1, 1, 3, 7, 20, 51, 154, 460, 1476, 4860, 16544, 57321, 202059, 720370, 2593470, 9408000, 34350506, 126108252, 465200332, 1723341185, 6408356052, 23911255544, 89495909408, 335916703284, 1264114452975, 4768464107355 (list; graph; listen)
OFFSET

1,3
LINKS

Index entries for sequences related to bracelets

FORMULA

Moebius transform of A006080(n+1).

CROSSREFS

Sequence in context: A118128 A113875 A111974 this_sequence A058499 A003097 A109220

Adjacent sequences: A066312 A066313 A066314 this_sequence A066316 A066317 A066318

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Dec 13 2001

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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