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A056435
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Step cyclic shifted sequence structures using exactly three different symbols.
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0
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0, 0, 1, 2, 3, 14, 11, 52, 72, 274, 281, 2155, 1741, 9650, 20456, 58071, 79293, 599452, 566739, 3668218, 6931312, 23776154, 31008623, 246109051, 282422552, 1357819070, 2615067966, 11358104142
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,4
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COMMENTS
| 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
| M. R. Nester (1999). Mathematical investigations of some plant interaction designs. PhD Thesis. University of Queensland, Brisbane, Australia.
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FORMULA
| A056430(n)-A056429(n).
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CROSSREFS
| Cf. A056416.
Sequence in context: A093553 A027673 A119616 * A032806 A041009 A042367
Adjacent sequences: A056432 A056433 A056434 * A056436 A056437 A056438
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KEYWORD
| nonn
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AUTHOR
| Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
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