OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
17 is in the sequence because 71+2=73 prime; 971 is in the sequence because 179+2=181 prime.
MATHEMATICA
Select[Prime[Range[2, 1700]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 2]&](* Vincenzo Librandi, Sep 15 2013 *)
PROG
(Magma) [p: p in PrimesInInterval(2, 400) | IsPrime(q+2) where q is Seqint(Reverse(Intseq(p)))]; // Vincenzo Librandi, Sep 15 2013
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vincenzo Librandi, Sep 20 2009
EXTENSIONS
Edited by N. J. A. Sloane, Sep 20 2009
STATUS
approved