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A303008
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Even pseudoprimes m (A006935) such that 2m+1 is prime.
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2
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2, 126217792286, 600030498926, 1248599869826, 226537279412126, 7615111129051346, 9609149773927166, 17502271515299726, 20140666152370226, 126921319513852046, 133564589570047406, 141572739574418846, 185615640867777506, 193420934175277166
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OFFSET
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1,1
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COMMENTS
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For n>1, 2*a(n)+1 belongs to A300193.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,hard
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AUTHOR
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STATUS
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approved
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