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A172713
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Number of 7*n X 7 0..2 arrays with row sums 3 and column sums 3*n
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1
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3758757240, 8610740229284196003000, 42758542523186088601256526892620000, 295799727163686817428226118102222383709995755000, 2462059619716250949213618993808700317296159580533060054282240
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OFFSET
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1,1
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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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