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A056483 Number of primitive (aperiodic) palindromic structures using exactly four different symbols. 2
0, 0, 0, 0, 0, 0, 1, 1, 10, 10, 65, 65, 350, 349, 1701, 1700, 7770, 7760, 34105, 34095, 145749, 145685, 611501, 611435, 2532530, 2532180, 10391735, 10391395, 42355950, 42354239, 171798901 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,9
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 4 of A284826.
Cf. A056465.
Sequence in context: A106789 A270012 A219911 * A056473 A241869 A243126
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 07:33 EDT 2024. Contains 371235 sequences. (Running on oeis4.)