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%I #3 Mar 31 2012 10:32:48
%S 1,1,1,3,16,75,384,1805,8640,42336,207368,995808,5184000,24192672,
%T 121730700,594350400,2921811200
%N Maximal number of spanning trees in a planar graph with n nodes.
%K nonn,nice,hard
%O 0,4
%A _Brendan McKay_, Jan 18 2000