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Primes p such that p = q^2 - 6*r^2 where q and r are also primes.
5

%I #5 Jul 31 2015 10:18:57

%S 67,97,139,211,307,337,379,547,643,691,787,811,907,937,1123,1483,1531,

%T 1627,1657,1699,1747,1867,1987,2083,2467,2659,2707,3067,3163,3187,

%U 3307,3331,3457,3571,3643,3697,4027,4339,4363,4507,4603,4723,4987,5179,5227,5563

%N Primes p such that p = q^2 - 6*r^2 where q and r are also primes.

%H Colin Barker, <a href="/A260806/b260806.txt">Table of n, a(n) for n = 1..1000</a>

%e 67 is in the sequence because 67 = 11^2 - 6*3^2 and 67, 11 and 3 are all primes.

%Y Cf. A260805, A260807, A260808, A260809.

%K nonn

%O 1,1

%A _Colin Barker_, Jul 31 2015