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A056419
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Number of step cyclic shifted sequences using exactly six different symbols.
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2
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0, 0, 0, 0, 0, 60, 360, 6030, 35280, 410976, 1174896, 19948200, 43022700, 543757860, 2524673904, 15399118440, 46338868800, 737917466160, 1459120076400, 19381180990752, 75959665269840, 534453892557660
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OFFSET
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1,6
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COMMENTS
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See A056371 for an explanation of step shifts. Under step cyclic shifts, abcde, bdace, bcdea, cdeab and daceb etc. are equivalent.
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REFERENCES
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M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia. [See A056391 for pdf file of Chap. 2]
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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