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Number of primitive (period n) bracelet structures using exactly six different colored beads.
2

%I #9 Aug 22 2017 20:53:09

%S 0,0,0,0,0,1,3,27,171,1249,8389,56078,360430,2272598,14037552,

%T 85516427,514976658,3074986236,18239677629,107654218055,632996894925,

%U 3711499485032,21716765203045,126880009551584

%N Number of primitive (period n) bracelet structures using exactly six different colored beads.

%C Turning over will not create a new bracelet. Permuting the colors of the beads will not change the structure.

%D 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]

%F A056365(n)-A056364(n).

%Y Column 6 of A276543.

%Y Cf. A056307.

%K nonn

%O 1,7

%A _Marks R. Nester_