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A056399
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Number of step shifted (decimated) sequence structures using exactly five different symbols.
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1
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0, 0, 0, 0, 1, 9, 26, 299, 1183, 10701, 24736, 349241, 626053, 6680979, 26364610, 137247254, 353304459, 4826418027, 8199440662, 93679529503, 315943737331, 1913783074461, 4382586624256, 60629067776483
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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. 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. [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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