id:A056357 - OEIS Search Results

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Number of bracelet structures using exactly two different colored beads.

+0
2

0, 1, 1, 3, 3, 7, 8, 17, 22, 43, 62, 121, 189, 361, 611, 1161, 2055, 3913, 7154, 13647, 25481, 48733, 92204, 176905, 337593, 649531, 1246862, 2405235, 4636389, 8964799, 17334800 (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	`A000011(n)-1.`
	CROSSREFS	`Cf. A056295.` `Sequence in context: A110618 A108046 A116157 this_sequence A144554 A143088 A131036` `Adjacent sequences: A056354 A056355 A056356 this_sequence A056358 A056359 A056360`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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