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A140920
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Number of 5 X 9 matrices with elements in 0..n with each row and each column in nondecreasing order. 5,9,n can be permuted, see formula.
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0
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1, 2002, 1002001, 208416208, 23029990984, 1566039386912, 72261531710368, 2424984388825856, 62305564808355232, 1274867710694037824, 21427584214357481888, 303282730418598205184, 3688967826726218553440, 39214657989988793866400, 369491052699789370779000
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