OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..1000
EXAMPLE
83 is in the sequence because 38+9=47 is prime.
MATHEMATICA
Select[Prime[Range[4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 9]&]
PROG
(Magma) [p: p in PrimesUpTo(4000) | IsPrime(q+9) where q is Seqint(Reverse(Intseq(p)))];
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Vincenzo Librandi, Jan 04 2014
STATUS
approved