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A085542
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Determinant of the n X n matrix M_(i,j)=i/gcd(i,j)=lcm(i,j)/j.
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1
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1, -1, 2, -2, 8, 16, -96, 96, -192, -768, 7680, 15360, -184320, -1105920, -8847360, 8847360, -141557760, -283115520, 5096079360, 20384317440, 244611809280, 2446118092800, -53814598041600, -107629196083200, 430516784332800, 5166201411993600, -10332402823987200
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