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A056360
Number of bracelet structures using exactly five different colored beads.
5
0, 0, 0, 0, 1, 3, 16, 85, 434, 2271, 11530, 58400, 290689, 1436685, 7036418, 34286464, 166316979, 804557406, 3884248150, 18731033958, 90269841924, 434955114981, 2096028083116, 10104206901987, 48733744753173, 235196202817401, 1135892957109815, 5490007141743186
OFFSET
1,6
COMMENTS
Turning over will not create a new bracelet. Permuting the colors of the beads 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
a(n) = A056355(n) - A056354(n).
CROSSREFS
Column 5 of A152176.
Sequence in context: A277923 A076279 A056369 * A278681 A224869 A163604
KEYWORD
nonn
EXTENSIONS
Terms a(25) and beyond from Andrew Howroyd, Oct 24 2019
STATUS
approved