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A018803
Number of ways to color cells of n X n square with 2 colors so that no subsquare of side >1 has all corners same color.
+0
1
2, 14, 276, 10980, 781712, 58339148, 3066831440
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 6 13:45 EST 2009. Contains 170429 sequences.
AT&T Labs Research
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