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A077375
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Numbers k such that 2^k + prime(k) is prime.
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5
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2, 3, 4, 5, 12, 13, 14, 23, 57, 106, 226, 227, 311, 373, 1046, 1298, 1787, 1952, 2130, 2285, 2670, 3254, 3642, 4369, 13559, 33418, 66830
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internal format)
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OFFSET
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1,1
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COMMENTS
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All terms < 5000 correspond to certified primes (Primo 2.2.0 beta). - Ryan Propper, Aug 08 2005
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LINKS
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EXAMPLE
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2^12 + prime(12) = 4096 + 43 = 4139 is a prime, so 12 is a term.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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