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%I #4 Jun 23 2015 11:20:38
%S 1,1,0,1,1,3,0,12,5,83,0,808,47
%N Number of spindle configurations of n skew lines, up to isotopy, which are amphichiral.
%C a(n)=0 for n=3 (mod 4)
%H R. Bacher and D. Garber, <a href="http://www.ams.org/mathscinet-getitem?mr=2326942">Spindle configurations of skew lines</a>
%K more,nonn
%O 1,6
%A _David Garber_, Sep 20 2005
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