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A103805
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Primes p such that 2*p - 27 and 2*p + 27 are positive primes.
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3
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17, 23, 37, 43, 83, 103, 127, 197, 257, 307, 313, 317, 337, 373, 457, 673, 677, 727, 733, 797, 863, 887, 937, 953, 1013, 1063, 1283, 1303, 1597, 1667, 1693, 1777, 1783, 1987, 1997, 2053, 2063, 2267, 2297, 2393, 2473, 2543, 2707, 2777, 2833, 2837
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listen;
history;
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internal format)
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OFFSET
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1,1
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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Select[Range[17, 2000], PrimeQ[ # ] && PrimeQ[2# + 27] && PrimeQ[2# - 27] &]
Select[Prime[Range[5, 500]], And@@PrimeQ[2#+{27, -27}]&] (* Harvey P. Dale, Jul 06 2013 *)
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PROG
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(Magma) [p: p in PrimesUpTo(3000) | IsPrime(2*p-27) and IsPrime(2*p+27)]; // Vincenzo Librandi, Nov 16 2010
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CROSSREFS
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Cf. A103802, A103803, A103804.
Sequence in context: A072184 A107644 A158710 * A333327 A241528 A156567
Adjacent sequences: A103802 A103803 A103804 * A103806 A103807 A103808
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov, Feb 16 2005
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EXTENSIONS
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More terms from Vincenzo Librandi, Mar 17 2010
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STATUS
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approved
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