OFFSET
1,1
COMMENTS
Or, primes in A175282.
MATHEMATICA
Select[Prime[Range[400]], PrimeQ[ #^2+3*#+9]&]
PROG
(Magma) [ n: n in [0..1250] | IsPrime(n) and IsPrime(n^2+3*n+9)] // Vincenzo Librandi, Jan 30 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Zak Seidov, Mar 21 2010
STATUS
approved