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).
Table of n, a(n) for n=0..9.
Index entries for sequences related to tic-tac-toe
Cf. A008907, A048245.
Sequence in context: A240193 A319077 A008907 * A320203 A217093 A278639
Adjacent sequences: A048243 A048244 A048245 * A048247 A048248 A048249