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Search: id:A066316
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A066316 Number of identity (asymmetric) bracelets (or necklaces) with n red and blue beads such that the beads switch colors when bracelet is turned over. +0
2
1, 5, 24, 91, 340, 1224, 4365, 15521, 55311, 197964, 712243, 2577105, 9375360, 34284971, 125977464, 464938189, 1722817415, 6407307543, 23909159417, 89491715105, 335908316844, 1264097675775, 4768430557020, 18027183349395 (list; graph; listen)
OFFSET

4,2
LINKS

Index entries for sequences related to bracelets

FORMULA

a(n)=A022553(n)-A066315(n)

CROSSREFS

Sequence in context: A158499 A074085 A145914 this_sequence A087095 A099653 A078820

Adjacent sequences: A066313 A066314 A066315 this_sequence A066317 A066318 A066319

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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