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A127955
Composite numbers of the form (2^p+1)/3 where p is a prime.
+0
13
178956971, 45812984491, 733007751851, 46912496118443, 3002399751580331, 192153584101141163, 49191317529892137643, 787061080478274202283, 3148244321913096809131, 3223802185639011132549803
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.
AT&T Labs Research
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