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A028880
Primes of the form n^2 - 6.
3
3, 19, 43, 163, 283, 523, 619, 2203, 2803, 3019, 4219, 4483, 5323, 5923, 6883, 7219, 9403, 11443, 12763, 13219, 15619, 17683, 20443, 21019, 24019, 27883, 34963, 37243, 38803, 41203, 42019, 46219, 55219, 69163, 75619, 85843, 100483
OFFSET
1,1
COMMENTS
a(n) == 19 mod 24 for all n > 1. - Zak Seidov, Mar 10 2015
FORMULA
a(n) = A028879(n)^2 - 6. - Zak Seidov, Mar 10 2015
PROG
(Magma) [ a: n in [1..250] | IsPrime(a) where a is 4*n^2+4*n-5 ]; // Vincenzo Librandi, Aug 05 2010
(PARI) for(n=1, 500, if(isprime(p=n^2-6), print1(p, ", "))) \\ Derek Orr, Mar 11 2014
CROSSREFS
Sequence in context: A103145 A100694 A146664 * A162905 A201875 A063553
KEYWORD
nonn,easy
STATUS
approved