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A056436
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Step cyclic shifted sequence structures using exactly four different symbols.
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0
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0, 0, 0, 1, 1, 11, 13, 83, 162, 930, 1369, 13730, 16421, 124702, 355793, 1356781, 2555043, 25933814, 32931815, 283330733, 720489755, 3308255032, 5763641923, 60874698532, 93543112676, 600086810852
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,6
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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
| A056431(n)-A056430(n).
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CROSSREFS
| Cf. A056417.
Sequence in context: A116436 A056446 A023317 * A089824 A086549 A108090
Adjacent sequences: A056433 A056434 A056435 * A056437 A056438 A056439
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KEYWORD
| nonn
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AUTHOR
| Marks R. Nester (nesterm(AT)dpi.qld.gov.au)
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