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A155772
Primes p such that 2*p^2+2*p-41 is a prime.
3
5, 7, 11, 17, 19, 23, 29, 53, 59, 61, 83, 101, 103, 107, 131, 151, 179, 181, 191, 193, 199, 227, 239, 269, 281, 293, 313, 367, 383, 389, 419, 439, 467, 487, 503, 521, 541, 569, 587, 599, 601, 607, 617, 641, 647, 653, 673, 677, 691, 709, 733, 739, 757, 769, 787
OFFSET
1,1
LINKS
MATHEMATICA
Select[Prime[Range[3, 200]], PrimeQ[2 #^2 + 2 # - 41] &] (* Vincenzo Librandi, Oct 15 2012 *)
PROG
(Magma) [p: p in PrimesInInterval(5, 800) | IsPrime(2*p^2 + 2*p - 41)]; // Vincenzo Librandi, Oct 15 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Jan 27 2009
STATUS
approved