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A056369
Number of primitive (period n) bracelet structures using exactly five different colored beads.
2
0, 0, 0, 0, 1, 3, 16, 85, 434, 2270, 11530, 58397, 290689, 1436669, 7036417, 34286379, 166316979, 804556969, 3884248150, 18731031687, 90269841908, 434955103451, 2096028083116, 10104206843502
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]
FORMULA
CROSSREFS
Column 5 of A276543.
Cf. A056306.
Sequence in context: A151328 A277923 A076279 * A056360 A278681 A224869
KEYWORD
nonn
STATUS
approved