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A183412
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Number of nX5 binary arrays with each sum of a(1..i,1..j) no greater than i*j/2 and rows and columns in nondecreasing order
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1
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3, 21, 152, 1518, 11499, 98343, 556989, 3662106, 16124119, 85225430, 312644461, 1392323322, 4440186675, 17261781178, 49427257741, 171990299716, 450949023627, 1430808802178, 3490735786071, 10240050566337, 23490703637555
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