OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..200
MATHEMATICA
Select[Range[112347], PrimeQ[#^2+4] && PrimeQ[#^2+8] && PrimeQ[#^2+10]&]
Select[Range[120000], AllTrue[#^2+{4, 8, 10}, PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, Jan 09 2016 *)
PROG
(Magma)[n: n in [0..150000]|IsPrime(n^2+4) and IsPrime(n^2+8) and IsPrime(n^2+10)]
CROSSREFS
KEYWORD
nonn
AUTHOR
Vincenzo Librandi, Dec 16 2010
STATUS
approved