id:A056388 - OEIS Search Results

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Number of primitive (aperiodic) step shifted (decimated) sequences using exactly four different symbols.

+0
2

0, 0, 0, 12, 60, 792, 1404, 10704, 31200, 204972, 349956, 3727128, 5065804, 41572908, 127198968, 517279416, 1041517620, 11195605728, 15012935676, 135825494568, 363040468328, 1746669815460, 3181465294092 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`See A056371 for an explanation of step shifts.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`sum mu(d)*A056378(n/d) where d\|n.`
	CROSSREFS	`Sequence in context: A012359 A012707 A108096 this_sequence A056378 A076504 A044150` `Adjacent sequences: A056385 A056386 A056387 this_sequence A056389 A056390 A056391`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

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