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A160569
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a(n)=9*(a(n-1)a(n-3)-a(n-2)^2)/a(n-4), a(1)=a(2)=a(3)=1, a(4)=-9.
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1
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1, 1, 1, -9, -90, -1539, 51759, 7026831, 1349328699, -119669884380, -462804380329131, -818173230956710191, -775566981773559330471, 23349606875054800260574779, 383206716517298992863985977570
(list; graph; refs; listen; history; internal format)
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