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%I #14 May 24 2018 13:22:35
%S 0,0,1,0,0,0,2,0,4,0,0,2,1206969
%N Number of non-isomorphic DST (directed triple system) quasigroups of order n.
%C a(n) = 0 if n == 2 (mod 3).
%H Aleš Drápal, Terry S. Griggs, and Andrew R. Kozlik, <a href="https://doi.org/10.1142/S0219498815500899">Basics of DTS quasigroups: Algebra, geometry and enumeration</a> Journal of Algebra and Its Applications, 14.06 (2015): 1550089.
%H Aleš Drápal, A. Kozlik, and Terry S. Griggs, <a href="https://doi.org/10.1016/j.disc.2011.04.025">Latin directed triple systems</a>, Discrete Mathematics, 312.3 (2012): 597-607.
%K nonn,more
%O 1,7
%A _N. J. A. Sloane_, Jun 07 2015
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