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A038758
Number of ways of covering a 2n X 2n lattice by 2n^2 dominoes with exactly 4 horizontal (or vertical) dominoes.
+0
3
16, 281, 1785, 7175, 22015, 56406, 126966, 259170, 490050, 871255, 1472471, 2385201, 3726905, 5645500, 8324220, 11986836, 16903236, 23395365, 31843525, 42693035, 56461251, 73744946, 95228050, 121689750, 154012950, 193193091
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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 7 08:40 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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