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A260805 Primes p such that p = q^2 - 2*r^2 where q and r are also primes. 5

%I

%S 17,31,41,71,103,113,151,191,239,263,271,281,311,353,431,479,503,521,

%T 599,719,743,823,863,911,953,1031,1103,1151,1319,1361,1439,1487,1511,

%U 1583,1607,1663,1831,1871,2039,2087,2111,2423,2663,2711,2791,2801,2903,2999

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

%H Colin Barker, <a href="/A260805/b260805.txt">Table of n, a(n) for n = 1..1000</a>

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

%Y Cf. A260806, A260807, A260808, A260809.

%K nonn

%O 1,1

%A _Colin Barker_, Jul 31 2015

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Last modified September 23 19:41 EDT 2020. Contains 337315 sequences. (Running on oeis4.)