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A056350
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Number of primitive (period n) bracelets using exactly four different colored beads.
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1
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0, 0, 0, 3, 24, 136, 612, 2616, 10480, 41364, 159780, 613919, 2341920, 8919204, 33905164, 128904660, 490213680, 1866117224, 7111777860, 27140327757, 103721217388, 396974621676, 1521577377012, 5840546872280
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OFFSET
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1,4
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COMMENTS
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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. [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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STATUS
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approved
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