A260805 Primes p such that p = q^2 - 2*r^2 where q and r are also primes.

17, 31, 41, 71, 103, 113, 151, 191, 239, 263, 271, 281, 311, 353, 431, 479, 503, 521, 599, 719, 743, 823, 863, 911, 953, 1031, 1103, 1151, 1319, 1361, 1439, 1487, 1511, 1583, 1607, 1663, 1831, 1871, 2039, 2087, 2111, 2423, 2663, 2711, 2791, 2801, 2903, 2999

Offset

1,1

Links

Colin Barker, Table of n, a(n) for n = 1..1000

Example

71 is in the sequence because 71 = 11^2 - 2*5^2 and 71, 11 and 5 are all primes.

Crossrefs

Cf. A260806, A260807, A260808, A260809.

Sequence in context: A258029 A321596 A160961 * A267781 A270441 A256374

Adjacent sequences: A260802 A260803 A260804 * A260806 A260807 A260808

Keyword

nonn

Author

Colin Barker, Jul 31 2015

Status

approved