%I
%S 0,0,0,3,24,136,612,2616,10480,41364,159780,613919,2341920,8919204,
%T 33905164,128904660,490213680,1866117224,7111777860,27140327757,
%U 103721217388,396974621676,1521577377012,5840546872280
%N Number of primitive (period n) bracelets using exactly four different colored beads.
%C Turning over will not create a new bracelet.
%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 Sum mu(d)*A056344(n/d) where dn.
%Y Cf. A056289.
%K nonn
%O 1,4
%A _Marks R. Nester_
