id:A056407 - OEIS Search Results

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Number of primitive (aperiodic) step shifted (decimated) sequence structures using exactly three different symbols.

+0
1

0, 0, 1, 4, 8, 49, 54, 280, 524, 2362, 2872, 22694, 21866, 131696, 298783, 904634, 1341518, 10744516, 10748218, 72886710, 145274501, 522816718, 713023210, 5892611212, 7059926597, 35300963684, 70604007679 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`See A056371 for an explanation of step shifts. Permuting the symbols 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	`A056402(n)-A056401(n).`
	CROSSREFS	`Cf. A056387.` `Adjacent sequences: A056404 A056405 A056406 this_sequence A056408 A056409 A056410` `Sequence in context: A076687 A045882 A051681 this_sequence A056397 A128893 A123106`
	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.

AT&T Labs Research