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A155153 Primes p such that 13*p^2+3*p+1 is a prime. 2
2, 3, 7, 11, 13, 19, 23, 37, 41, 47, 53, 73, 79, 97, 107, 163, 167, 211, 223, 227, 229, 317, 337, 347, 353, 389, 397, 419, 491, 499, 547, 569, 601, 677, 683, 727, 757, 829, 839, 941, 1051, 1117, 1151, 1163, 1181, 1201, 1217, 1367, 1399, 1409, 1427, 1433, 1453 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

EXAMPLE

For p=3, 13*p^2+3*p+1=127; p=73, 13*p^2+3*p+1=69497

MATHEMATICA

Select[Prime[Range[1000]], PrimeQ[(13 #^2 + 3 # + 1)] &] (* Vincenzo Librandi, Oct 14 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(1500) | IsPrime(13*p^2+3*p+1)]; // Vincenzo Librandi, Oct 14 2012

CROSSREFS

Subsequence of A155152.

Sequence in context: A106483 A145673 A040116 * A014580 A197227 A091206

Adjacent sequences:  A155150 A155151 A155152 * A155154 A155155 A155156

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Jan 21 2009

STATUS

approved

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Last modified October 17 02:02 EDT 2018. Contains 316275 sequences. (Running on oeis4.)