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A201713 Primes of the form 2n^2 - 5. 3

%I

%S 3,13,67,157,283,643,877,1453,3037,4603,5197,5827,7933,8707,12163,

%T 14107,17293,18427,19597,30253,34843,38083,41467,56443,58477,62653,

%U 66973,71437,83227,93307,95917,98563,103963,109507,118093,123997

%N Primes of the form 2n^2 - 5.

%H Vincenzo Librandi, <a href="/A201713/b201713.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[2n^2-5,{n,2,1000}],PrimeQ]

%o (MAGMA) [a: n in [2..300] | IsPrime(a) where a is 2*n^2-5];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 04 2011

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Last modified March 28 05:38 EDT 2020. Contains 333073 sequences. (Running on oeis4.)