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A172566
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Number of 3*n X n 0..1 arrays with row sums 6 and column sums 18
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1
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0, 0, 0, 0, 0, 1, 182509367040000, 712008996110160366168717566400, 7664603814657718197913972357390335773198400000, 299436894513044390420517533660659195248061275496427347927110000
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