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A260806
Primes p such that p = q^2 - 6*r^2 where q and r are also primes.
5
67, 97, 139, 211, 307, 337, 379, 547, 643, 691, 787, 811, 907, 937, 1123, 1483, 1531, 1627, 1657, 1699, 1747, 1867, 1987, 2083, 2467, 2659, 2707, 3067, 3163, 3187, 3307, 3331, 3457, 3571, 3643, 3697, 4027, 4339, 4363, 4507, 4603, 4723, 4987, 5179, 5227, 5563
OFFSET
1,1
LINKS
EXAMPLE
67 is in the sequence because 67 = 11^2 - 6*3^2 and 67, 11 and 3 are all primes.
CROSSREFS
KEYWORD
nonn
AUTHOR
Colin Barker, Jul 31 2015
STATUS
approved