The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A103805 Primes p such that 2*p - 27 and 2*p + 27 are positive primes. 3
 17, 23, 37, 43, 83, 103, 127, 197, 257, 307, 313, 317, 337, 373, 457, 673, 677, 727, 733, 797, 863, 887, 937, 953, 1013, 1063, 1283, 1303, 1597, 1667, 1693, 1777, 1783, 1987, 1997, 2053, 2063, 2267, 2297, 2393, 2473, 2543, 2707, 2777, 2833, 2837 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Range[17, 2000], PrimeQ[ # ] && PrimeQ[2# + 27] && PrimeQ[2# - 27] &] Select[Prime[Range[5, 500]], And@@PrimeQ[2#+{27, -27}]&] (* Harvey P. Dale, Jul 06 2013 *) PROG (MAGMA) [p: p in PrimesUpTo(3000) | IsPrime(2*p-27) and IsPrime(2*p+27)]; // Vincenzo Librandi, Nov 16 2010 CROSSREFS Cf. A103802, A103803, A103804. Sequence in context: A072184 A107644 A158710 * A333327 A241528 A156567 Adjacent sequences:  A103802 A103803 A103804 * A103806 A103807 A103808 KEYWORD nonn AUTHOR Zak Seidov, Feb 16 2005 EXTENSIONS More terms from Vincenzo Librandi, Mar 17 2010 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)