OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
MATHEMATICA
Select[Prime[Range[1400]], PrimeQ[(4# - 5)]&] (* Vincenzo Librandi, Oct 31 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(1400) | IsPrime(4*p - 5)]; // Vincenzo Librandi, Oct 31 2012
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Feb 07 2009
STATUS
approved