OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[500]], PrimeQ[2 # - 3] && PrimeQ[4 # - 5] &] (* Vincenzo Librandi, Apr 10 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(7000) | IsPrime(4*p-5) and IsPrime(2*p-3)];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Mar 13 2010
STATUS
approved