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A061530 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. 4
1, 24, 3584, 3848888994048 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..4.

J. Ferry, n X n tic-tac-toe (Mathematica programs followed by results)

Index entries for sequences related to tic-tac-toe

CROSSREFS

Cf. A061526, A061527, A061528, A061529.

Sequence in context: A159681 A275569 A071639 * A275637 A223123 A278651

Adjacent sequences:  A061527 A061528 A061529 * A061531 A061532 A061533

KEYWORD

hard,nonn

AUTHOR

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

STATUS

approved

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Last modified January 16 06:59 EST 2019. Contains 319188 sequences. (Running on oeis4.)