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%I #9 Sep 24 2018 02:02:30
%S 1,1,2,16,800,323632,1086297184,30766606427588,7466577706821521924,
%T 15681997226277809235573754,286995508313697459220070082104780,
%U 45988915870193885369543805313062149050276
%N Number of edge-disjoint paths between opposite corners of n X n grid.
%D rec.puzzles Dec 10 1995
%Y Cf. A013991, A013992, A013993, A013994, A013995, A013996, A013997.
%K nonn,hard
%O 0,3
%A _Dan Hoey_
%E a(10) and a(11) from _Sean A. Irvine_, Sep 24 2018