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A172661
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Number of 2*n X 6 0..2 arrays with row sums 3 and column sums n
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1
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20, 16260, 16214000, 20982583300, 31091880269520, 50432680389260400, 87186713382942888000, 158040497103890978362500, 297155971199028097720850000, 575241665325478123466841078160
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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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