%I A056366
%S A056366 0,1,1,2,3,5,8,14,21,39,62,112,189,352,607,1144,2055,3885,7154,13602,
%T A056366 25472,48670,92204,176770,337590,649341,1246840,2404872,4636389,
%U A056366 8964143,17334800
%N A056366 Number of primitive (period n) bracelet structures using exactly two 
               different colored beads.
%C A056366 Turning over will not create a new bracelet. Permuting the colors of 
               the beads will not change the structure. Identical to A000046 for 
               n>1.
%D A056366 M. R. Nester (1999). Mathematical investigations of some plant interaction 
               designs. PhD Thesis. University of Queensland, Brisbane, Australia.
%F A056366 A000046(n)-A000007(n-1).
%Y A056366 Cf. A056303.
%Y A056366 Sequence in context: A082931 A034413 A034416 this_sequence A000046 A131132 
               A004692
%Y A056366 Adjacent sequences: A056363 A056364 A056365 this_sequence A056367 A056368 
               A056369
%K A056366 nonn
%O A056366 1,4
%A A056366 Marks R. Nester (nesterm(AT)dpi.qld.gov.au)