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%I #12 Sep 08 2022 08:45:41
%S 2,5,13,17,37,53,61,71,73,83,97,101,103,127,131,173,191,193,211,223,
%T 227,233,251,263,283,317,337,347,367,373,431,433,443,457,487,503,521,
%U 557,577,601,641,643,647,653,673,677,701,743,797,821,823,827,883,887,907
%N Primes p such that 64*p + 189 is also prime.
%H Vincenzo Librandi, <a href="/A156009/b156009.txt">Table of n, a(n) for n = 1..1000</a>
%p a := proc (n) if isprime(64*ithprime(n)+189) = true then ithprime(n) else end if end proc: seq(a(n), n = 1 .. 180); # _Emeric Deutsch_, Mar 01 2009
%t Select[Prime[Range[1000]], PrimeQ[(64*# + 189)]&] (* _Vincenzo Librandi_, Oct 30 2012 *)
%o (Magma) [p: p in PrimesUpTo(1000)| IsPrime(64*p + 189)]; // _Vincenzo Librandi_, Oct 30 2012
%Y Cf. A156004, A156005, A156007.
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Feb 01 2009
%E More terms from _Emeric Deutsch_, Mar 01 2009