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A184893
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Number of 3X3 1..n+1 arrays with positive determinant
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1
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132, 7854, 116520, 916860, 4820439, 19624035, 65713455, 190759077, 493962822, 1168477251, 2559841278, 5270707320, 10278584778, 19140242421, 34233601737, 59117179833, 98911520802, 160982370882, 255478326648, 396430119123
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