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%I #11 Feb 17 2020 04:05:27
%S 1,6728,53786626921,57248060375968384,123115692449982216049513,
%T 216388579168758145017797108072
%N Number of perfect matchings in graph P_{6} x P_{6} x P_{n}.
%H P. H. Lundow, <a href="http://www.theophys.kth.se/~phl/Text/1factors.pdf">Computation of matching polynomials and the number of 1-factors in polygraphs</a>, Research report #12 (1996).
%H Per Hakan Lundow, <a href="http://www.theophys.kth.se/~phl/Text/1factors2.ps.gz">Enumeration of matchings in polygraphs</a>, 1998.
%Y Cf. A006253, A028452, A028454.
%K nonn,more
%O 0,2
%A _Per H. Lundow_