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Search: id:A056510
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| A056510 |
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Periodic palindromic structures using exactly four different symbols. |
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+0
2
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| 0, 0, 0, 0, 0, 1, 1, 7, 10, 43, 65, 220, 350, 1059, 1701, 4803
(list; graph; listen)
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OFFSET
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1,8
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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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A056505(n)-A056504(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. A056473.
Sequence in context: A126076 A099579 A056521 this_sequence A013398 A013493 A025632
Adjacent sequences: A056507 A056508 A056509 this_sequence A056511 A056512 A056513
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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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EXTENSIONS
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Corrected by T. D. Noe (noe(AT)sspectra.com), Oct 25 2006
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