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A172808
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Number of n X n 0..4 arrays with row sums 9 and column sums 9
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1
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0, 0, 55, 157984, 2461011960, 148699584483880, 29715346096043717550, 17246529136870025302912000, 26159597034338175244538552103907, 95066344634881957233042525618261985200
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history;
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internal format)
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OFFSET
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1,3
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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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