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A056352
Number of primitive (period n) bracelets using exactly six different colored beads.
0
0, 0, 0, 0, 0, 60, 1080, 11970, 105840, 821952, 5874480, 39713490, 258136200, 1631272140, 10096734312, 61536365730, 370710950400, 2213749552980, 13132080672480, 77509456122366, 455754569691600
OFFSET
1,6
COMMENTS
Turning over will not create a new bracelet.
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
Sum mu(d)*A056346(n/d) where d|n.
CROSSREFS
Cf. A056291.
Sequence in context: A271651 A223348 A305545 * A056346 A283722 A105252
KEYWORD
nonn
STATUS
approved