A056350 - OEIS

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A056350

Number of primitive (period n) bracelets using exactly four different colored beads.

0, 0, 0, 3, 24, 136, 612, 2616, 10480, 41364, 159780, 613919, 2341920, 8919204, 33905164, 128904660, 490213680, 1866117224, 7111777860, 27140327757, 103721217388, 396974621676, 1521577377012, 5840546872280 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	COMMENTS	`Turning over will not create a new bracelet.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`Sum mu(d)*A056344(n/d) where d\|n.`
	CROSSREFS	`Cf. A056289.` `Sequence in context: A183900 A001089 A069515 * A056344 A201231 A125651` `Adjacent sequences: A056347 A056348 A056349 * A056351 A056352 A056353`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified February 14 02:39 EST 2012. Contains 205567 sequences.