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A002812
a(n) = 2a(n-1)^2 - 1.
(Formerly M1817 N0720)
+0
4
2, 7, 97, 18817, 708158977, 1002978273411373057, 2011930833870518011412817828051050497, 8095731360557835890888779535060256832479295062749579257164654370487894017
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 10 12:09 EST 2009. Contains 170569 sequences.
AT&T Labs Research
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