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A184646
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Number of (n+2)X3 0..3 arrays with each 3X3 subblock having a positive determinant
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1
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106449, 3745509, 127914873, 4349714604, 148865535558, 5086456344189, 173770575972936, 5938271620589823, 202911936134261004, 6933513869040543390, 236921565938349758076, 8095693393330933416858, 276632675670908357073564
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