OFFSET
1,1
COMMENTS
Primes p such that 3*(p+2) or (p+2)/3 is a square. - Vincenzo Librandi, Feb 16 2016
m is a member of A063213. - Bruno Berselli, Feb 16 2016
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..5000
MATHEMATICA
Select[Table[3 n^2 - 2, {n, 1, 800}], PrimeQ]
PROG
(Magma) [a: n in [1..300] | IsPrime(a) where a is 3*n^2-2];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Dec 04 2011
STATUS
approved