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Search: id:A056434
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| A056434 |
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Step cyclic shifted sequence structures using exactly two different symbols. |
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+0
1
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| 0, 1, 1, 3, 2, 7, 4, 13, 10, 25, 14, 87, 36, 129, 183, 356, 260, 1345, 804, 3759, 4433, 9757, 8384, 47461, 33780, 108329, 138766, 408375, 331184, 2251815, 1155734
(list; graph; listen)
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OFFSET
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1,4
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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. Permuting the symbols will not change the structure.
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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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A056429(n)-1.
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CROSSREFS
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Cf. A056415.
Sequence in context: A085168 A113658 A059029 this_sequence A143292 A075627 A011384
Adjacent sequences: A056431 A056432 A056433 this_sequence A056435 A056436 A056437
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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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