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A172626
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Number of n X n 0..2 arrays with row sums 9 and column sums 9
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1
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0, 0, 0, 0, 120, 16214000, 7873709050620, 9350902053107858880, 26088526624958727703324771, 162526525004284727135887319788800, 2143395673887060254676185406326252145600
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OFFSET
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1,5
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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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