login
A056370
Number of primitive (period n) bracelet structures using exactly six different colored beads.
2
0, 0, 0, 0, 0, 1, 3, 27, 171, 1249, 8389, 56078, 360430, 2272598, 14037552, 85516427, 514976658, 3074986236, 18239677629, 107654218055, 632996894925, 3711499485032, 21716765203045, 126880009551584
OFFSET
1,7
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 6 of A276543.
Cf. A056307.
Sequence in context: A215711 A270956 A129530 * A056361 A141442 A053932
KEYWORD
nonn
STATUS
approved