OFFSET
1,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Range[160], PrimeQ[2 Prime[#] + 3] &] (* Vincenzo Librandi, May 02 2016 *)
PROG
(Magma) [n: n in [1..250] | IsPrime(2*NthPrime(n)+3)]; // Vincenzo Librandi, May 02 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Ray Chandler, Nov 07 2003
STATUS
approved