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A098090
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Numbers k such that 2k-3 is prime.
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34
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3, 4, 5, 7, 8, 10, 11, 13, 16, 17, 20, 22, 23, 25, 28, 31, 32, 35, 37, 38, 41, 43, 46, 50, 52, 53, 55, 56, 58, 65, 67, 70, 71, 76, 77, 80, 83, 85, 88, 91, 92, 97, 98, 100, 101, 107, 113, 115, 116, 118, 121, 122, 127, 130, 133, 136, 137, 140, 142, 143, 148, 155, 157, 158
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OFFSET
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1,1
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COMMENTS
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LINKS
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FORMULA
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Half of p + 3, where p is a prime greater than 2.
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MATHEMATICA
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PROG
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(Sage) [n for n in (1..200) if is_prime(2*n-3) ] # G. C. Greubel, May 21 2019
(GAP) Filtered([1..200], k-> IsPrime(2*k-3) ) # G. C. Greubel, May 21 2019
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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Douglas Winston (douglas.winston(AT)srupc.com), Sep 14 2004
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STATUS
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approved
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