id:A056406 - OEIS Search Results

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

+0
1

0, 1, 2, 4, 5, 16, 13, 42, 49, 133, 107, 600, 351, 1385, 2164, 4416, 4115, 22043, 14601, 67872, 88360, 209827, 190745, 1074534, 839122, 2796647, 3730532, 11275300, 9587579, 67193198, 35792567 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`See A056371 for an explanation of step shifts. Permuting the symbols will not change the structure. Identical to A056401 for n>1.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`A056401(n)-A000007(n-1).`
	CROSSREFS	`Cf. A056386.` `Sequence in context: A002959 A071316 A056401 this_sequence A070917 A038757 A062549` `Adjacent sequences: A056403 A056404 A056405 this_sequence A056407 A056408 A056409`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

AT&T Labs Research