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A157467
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Primes of the form p^2+2*p+2 where p is prime.
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2
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17, 37, 197, 401, 577, 2917, 5477, 7057, 8101, 12101, 22501, 32401, 50177, 52901, 57601, 69697, 72901, 80657, 98597, 122501, 147457, 176401, 193601, 197137, 215297, 324901, 352837, 414737, 427717, 454277, 547601, 739601, 746497, 846401
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| lst={}; Do[p=Prime[n]; r=Sqrt[p-1]-1; If[PrimeQ[r], AppendTo[lst, p]], {n, 4*8!}]; lst
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PROG
| (MAGMA) [a: p in PrimesUpTo(950) | IsPrime(a) where a is p^2+2*p+2]; [From Vincenzo Librandi, Dec 20 2010]
(PARI) forprime(p=2, 1000, m=p^2+2*p+2; if(isprime(m), print1(m, ", ")))
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CROSSREFS
| Cf. A127435, A127436.
Sequence in context: A052292 A154301 A057185 * A093343 A153685 A121710
Adjacent sequences: A157464 A157465 A157466 * A157468 A157469 A157470
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KEYWORD
| nonn
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AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Mar 01 2009
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