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A072713
a(1)=a(2)=a(3)=a(4)=a(5)=1; a(n)*a(n-5) = a(n-1)*a(n-2)*a(n-3)*a(n-4)+1.
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1, 1, 1, 1, 1, 2, 3, 7, 43, 1807, 815861, 147917502976, 1339566593057489572791, 6793440021984612817314824762112917427331, 607759339422199886496126580428414916308278553796099069562650354036190535151
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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