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Search: id:A056347
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| A056347 |
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Number of primitive (period n) bracelets using a maximum of six different colored beads. |
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+0
2
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| 6, 15, 50, 210, 882, 4220, 20640, 107100, 563730, 3036411, 16514100, 90778485, 502474350, 2799199380, 15673672238, 88162569180, 497847963690, 2821127257950, 16035812864940, 91404065292036
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Turning over will not create a new bracelet.
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REFERENCES
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M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.
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FORMULA
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sum mu(d)*A056341(n/d) where d|n.
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CROSSREFS
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Cf. A032164.
Sequence in context: A082637 A106272 A056423 this_sequence A082009 A122365 A119132
Adjacent sequences: A056344 A056345 A056346 this_sequence A056348 A056349 A056350
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KEYWORD
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nonn
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AUTHOR
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Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
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