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A172749
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Number of 2*n X n 0..3 arrays with row sums 9 and column sums 18
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1
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0, 0, 1, 122975608, 552523141020099900, 28004870901329112246159413600, 13286253592938310343269948335403784033355, 48077185419930811359972085602422918530347454406137600
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OFFSET
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1,4
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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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