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A159207
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Number of n X n arrays of squares of integers with every 3X3 subblock summing to 7
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0
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540, 4128, 19028, 64440, 278516, 945816, 2788452, 10699008, 34672388, 103376592, 390361412, 1299118848, 4097433060
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OFFSET
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3,1
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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