%I #17 Dec 15 2016 02:31:40
%S 1,3,12,38,108,174,228,174,89,23
%N Number of distinct 3-colorings (X, O and blank) of 3 X 3 grid with floor((n+1)/2) X's, floor(n/2) O's and 9 - n blanks.
%C Number of tic-tac-toe positions after n plays if game is allowed to continue after the win, up to rotation and reflection. Gives upper bound on distinct tic-tac-toe positions after n plays (A008907).
%H <a href="/index/Th#TTT">Index entries for sequences related to tic-tac-toe</a>
%Y Cf. A008907, A048245.
%K nonn,fini,full
%O 0,2
%A _Rob Pratt_