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A056359
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Number of bracelet structures using exactly four different colored beads.
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5
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0, 0, 0, 1, 2, 11, 33, 137, 478, 1851, 6845, 26148, 98406, 374010, 1416251, 5380907, 20440250, 77795428, 296384565, 1131011633, 4321964768, 16541275068, 63400061153, 243358803904, 935431121462, 3600520831215, 13876485252323, 53546253055179, 206864927506166, 800068244639812
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OFFSET
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1,5
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COMMENTS
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Turning over will not create a new bracelet. Permuting the colors of the beads will not change the structure.
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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. [See A056391 for pdf file of Chap. 2]
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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