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A157975
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Primes p such that 16*p + 15 is also prime.
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4
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2, 7, 11, 13, 23, 29, 37, 53, 61, 67, 71, 79, 89, 97, 103, 109, 113, 131, 137, 139, 149, 167, 179, 197, 211, 223, 257, 277, 293, 313, 317, 337, 379, 383, 397, 419, 431, 439, 443, 467, 571, 601, 617, 631, 641, 643, 653, 659, 677, 691, 719, 733, 739, 743, 809
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..3000
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MATHEMATICA
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q=15; lst={}; Do[p=Prime[n]; If[PrimeQ[(q+1)*p+q], AppendTo[lst, p]], {n, 6!}]; lst
Select[Prime[Range[1000]], PrimeQ[16 # + 15]&] (* Vincenzo Librandi, Feb 03 2014 *)
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PROG
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(MAGMA) [n: n in [0..1000] | IsPrime(n) and IsPrime(16*n + 15)]; // Vincenzo Librandi, Feb 03 2014
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CROSSREFS
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Cf. A136082, A136083, A023213, A023221, A023235, A023240, A157974, A136083, A136084, A089440, A136085
Sequence in context: A038892 A019346 A045369 * A339862 A045370 A117048
Adjacent sequences: A157972 A157973 A157974 * A157976 A157977 A157978
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KEYWORD
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nonn,easy
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AUTHOR
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Vladimir Joseph Stephan Orlovsky, Mar 10 2009
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STATUS
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approved
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