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%I #12 Oct 25 2019 16:34:28
%S 0,0,0,1,2,10,32,129,468,1806,6780,25917,98056,372919,1414548,5375974,
%T 20432480,77773845,296350460,1130919576,4321818986,16540888897,
%U 63399449652,243357204415,935428588930,3600514267686,13876474860110,53546226302319,206864885150216
%N Number of primitive (period n) n-bead bracelet structures which are not periodic palindromes using exactly four different colored beads.
%C Permuting the colors of the beads will not change the structure.
%H Andrew Howroyd, <a href="/A328039/b328039.txt">Table of n, a(n) for n = 1..200</a>
%F a(n) = A056368(n) - A056521(n).
%Y Column 4 of A309784.
%Y Cf. A056368, A056521, A328035, A328038, A328658.
%K nonn
%O 1,5
%A _Andrew Howroyd_, Oct 02 2019
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