OFFSET
1,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
a(1)=1 because 2*1+9=11 and 2*1+27=29 are both prime.
MATHEMATICA
Select[Range[400], AllTrue[2#+{9, 27}, PrimeQ]&] (* Harvey P. Dale, Oct 06 2024 *)
PROG
(Magma) [n: n in [0..1000] |IsPrime(2*n+9) and IsPrime(2*n+27)]; // Vincenzo Librandi, Dec 06 2010
CROSSREFS
KEYWORD
nonn,easy,less
AUTHOR
Juri-Stepan Gerasimov, Feb 02 2010
EXTENSIONS
Corrected and extended by Vincenzo Librandi and Charles R Greathouse IV, Mar 24 2010
STATUS
approved