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A023204
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Primes p such that 2*p + 3 is also prime.
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32
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2, 5, 7, 13, 17, 19, 29, 43, 47, 53, 67, 73, 89, 97, 113, 127, 137, 139, 157, 167, 173, 193, 197, 199, 223, 227, 229, 269, 277, 283, 307, 337, 349, 353, 379, 383, 397, 409, 439, 463, 467, 487, 503, 509, 523, 547, 557, 563, 599, 607, 613, 617, 643, 647, 659, 739, 743, 773
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OFFSET
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1,1
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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Select[Prime[Range[200]], PrimeQ[2#+3]&] (* Harvey P. Dale, May 03 2012 *)
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PROG
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(Magma) [p: p in PrimesUpTo(1000) | IsPrime(2*p+3)]; // Vincenzo Librandi, Nov 20 2010
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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