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A056285 Number of n-bead necklaces with exactly five different colored beads. 6
0, 0, 0, 0, 24, 300, 2400, 15750, 92680, 510312, 2691600, 13794150, 69309240, 343501500, 1686135376, 8221437000, 39901776360, 193054016840, 932142850800, 4495236798162, 21664357535320, 104388120866100, 503044634004000, 2425003924383900, 11696087875731624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Turning over the necklace is not allowed.

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

Alois P. Heinz, Table of n, a(n) for n = 1..1000

FORMULA

A001869(n)-5*A001868(n)+10*A001867(n)-10*A000031(n)+5.

CROSSREFS

Cf. A001869.

Column k=5 of A087854.

Sequence in context: A153782 A073990 A056290 * A162686 A010976 A100130

Adjacent sequences:  A056282 A056283 A056284 * A056286 A056287 A056288

KEYWORD

nonn

AUTHOR

Marks R. Nester

STATUS

approved

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Last modified September 24 21:05 EDT 2017. Contains 292441 sequences.