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A056482 Number of primitive (aperiodic) palindromic structures using exactly three different symbols. 2
0, 0, 0, 0, 1, 1, 6, 6, 25, 24, 90, 89, 301, 295, 965, 960, 3025, 2999, 9330, 9305, 28495, 28411, 86526, 86430, 261624, 261324, 788945, 788669, 2375101, 2374110, 7141686 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
COMMENTS
Permuting the symbols will not change the structure.
REFERENCES
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]
LINKS
FORMULA
CROSSREFS
Column 3 of A284826.
Cf. A056464.
Sequence in context: A219910 A334569 A077193 * A255466 A286482 A123874
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)