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Search: id:A056422
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| A056422 |
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Number of primitive (period n) step cyclic shifted sequences using a maximum of five different symbols. |
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+0
3
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| 5, 10, 30, 105, 196, 1460, 2010, 13950, 37050, 246542, 445510, 5204180, 7832180, 72701620, 254689426, 1196199375, 2805046960, 35322773200, 55770979190, 596439488166, 1892294576710, 10837222569140
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OFFSET
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1,1
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COMMENT
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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.
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FORMULA
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Sum mu(d)*A056413(n/d) where d|n.
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CROSSREFS
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Sequence in context: A048010 A002571 A077916 this_sequence A032296 A052648 A020995
Adjacent sequences: A056419 A056420 A056421 this_sequence A056423 A056424 A056425
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KEYWORD
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nonn
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AUTHOR
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Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
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