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A153767
Primes p such that 8*p - 9 is also prime.
3
2, 5, 7, 11, 17, 29, 31, 47, 59, 61, 109, 131, 137, 139, 167, 179, 181, 197, 199, 229, 251, 269, 277, 281, 307, 337, 347, 367, 379, 397, 419, 421, 449, 467, 479, 491, 521, 557, 599, 601, 619, 631, 641, 647, 661, 677, 691, 719, 727, 739, 757, 761, 769, 787, 797
OFFSET
1,1
LINKS
EXAMPLE
For p=31 (a prime), 8*p - 9 = 239 is also prime, so 31 is in the sequence.
MATHEMATICA
Select[Prime[Range[150]], PrimeQ[8 # - 9]&] (* Vincenzo Librandi, Apr 04 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(1000) | IsPrime(8*p-9)]; // Vincenzo Librandi, Apr 04 2013
CROSSREFS
Cf. A153766.
Sequence in context: A138244 A326505 A019396 * A038973 A197297 A172527
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Jan 01 2009
EXTENSIONS
4 removed, extended by R. J. Mathar, Jan 07 2009
STATUS
approved