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Search: id:A056512
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| A056512 |
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Periodic palindromic structures using exactly six different symbols. |
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+0
2
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| 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 13, 21, 154, 266
(list; graph; listen)
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OFFSET
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1,12
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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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A056507(n)-A056506(n).
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EXAMPLE
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For example, aaabbb is not a (finite) palindrome but it is a periodic palindrome. Permuting the symbols will not change the structure.
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CROSSREFS
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Cf. A056475.
Sequence in context: A053659 A066630 A147435 this_sequence A056523 A158998 A122559
Adjacent sequences: A056509 A056510 A056511 this_sequence A056513 A056514 A056515
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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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