id:A056367 - OEIS Search Results

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Number of primitive (period n) bracelet structures using exactly three different colored beads.

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0, 0, 1, 2, 5, 13, 31, 80, 201, 533, 1401, 3822, 10395, 28859, 80201, 225286, 634265, 1796433, 5100325, 14534758, 41513402, 118879249, 341094843, 980661980, 2824223490, 8146897815, 23535345170 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`Turning over will not create a new bracelet. Permuting the colors of the beads will not change the structure.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`A056362(n)-A000046(n).`
	CROSSREFS	`Cf. A056304.` `Adjacent sequences: A056364 A056365 A056366 this_sequence A056368 A056369 A056370` `Sequence in context: A063636 A076501 A099515 this_sequence A082733 A095134 A086758`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.

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