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A172648
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Number of 2*n X n 0..2 arrays with row sums 9 and column sums 18
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1
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0, 0, 0, 0, 113400, 50432680389260400, 101720498887190010630546323580, 1021718304724615708073668620385984867252800, 52487498990202837315687104908805779583934003413314100425
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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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