id:A056418 - OEIS Search Results

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Number of step cyclic shifted sequences using exactly five different symbols.

+0
3

0, 0, 0, 0, 6, 150, 400, 4080, 15480, 127818, 269340, 3493680, 5777190, 57262450, 210945182, 1030388115, 2493913170, 32176448060, 51785999300, 562228325904, 1805427491920, 10438821843750, 22865672706000 (list; graph; listen)

	OFFSET	`1,5`
	COMMENT	`See A056371 for an explanation of step shifts. Under step cyclic shifts, abcde, bdace, bcdea, cdeab and daceb etc. are equivalent.`
	REFERENCES	`M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.`
	FORMULA	`A056413(n)-5A056412(n)+10A056411(n)-10*A002729(n)+5.`
	CROSSREFS	`Cf. A056413.` `Sequence in context: A012791 A089480 A056427 this_sequence A070025 A065946 A013296` `Adjacent sequences: A056415 A056416 A056417 this_sequence A056419 A056420 A056421`
	KEYWORD	`nonn`
	AUTHOR	`Marks R. Nester (nesterm(AT)dpi.qld.gov.au)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research