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A172636
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Number of n X 7 0..2 arrays with row sums 7 and column sums n.
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2
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1, 393, 35617, 7343449, 1509893001, 360255871641, 91358224634433, 24567498558526617, 6887820148172502169, 1998635481349606292593, 596268326872362183077193, 182062424087215419645579529
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OFFSET
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1,2
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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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