A061528 - OEIS

%I #4 Jul 10 2011 18:21:39

%S 0,0,77904,3106180802304,1013669737707471716851200,

%T 18968374334711770486769731248538772198400,

%U 11766533207621124571852752228412289168389531988430887478758400

%N Number of complete games of n X n tic-tac-toe won by O.

%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, A061529, A061530.

%K nonn

%O 1,3

%A Jim Ferry (jferry(AT)alum.mit.edu), May 04 2001