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%I #4 Jul 10 2011 18:21:39
%S 1,24,3584,3848888994048
%N Number of complete "rational" games of n X n tic-tac-toe: for n > 2 these are games that are a theoretical draw after each move.
%H J. Ferry, <a href="http://ladybug.xs4all.nl/arlet/puzzles/solutions/contrib/tictactoe.html">n X n tic-tac-toe</a> (Mathematica programs followed by results)
%H <a href="/index/Th#TTT">Index entries for sequences related to tic-tac-toe</a>
%Y Cf. A061526, A061527, A061528, A061529.
%K hard,nonn
%O 1,2
%A Jim Ferry (jferry(AT)alum.mit.edu), May 04 2001
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