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%I #37 Sep 08 2022 08:44:50
%S 3,19,43,163,283,523,619,2203,2803,3019,4219,4483,5323,5923,6883,7219,
%T 9403,11443,12763,13219,15619,17683,20443,21019,24019,27883,34963,
%U 37243,38803,41203,42019,46219,55219,69163,75619,85843,100483
%N Primes of the form n^2 - 6.
%C a(n) == 19 mod 24 for all n > 1. - _Zak Seidov_, Mar 10 2015
%H Vincenzo Librandi, <a href="/A028880/b028880.txt">Table of n, a(n) for n = 1..1000</a>
%H P. De Geest, <a href="http://www.worldofnumbers.com/consemor.htm">Palindromic Quasipronics of the form n(n+x)</a>
%F a(n) = A028879(n)^2 - 6. - _Zak Seidov_, Mar 10 2015
%t lst={};Do[s=n^2;If[PrimeQ[p=s-6], AppendTo[lst, p]], {n, 7!}];lst (* _Vladimir Joseph Stephan Orlovsky_, Sep 26 2008 *)
%o (Magma) [ a: n in [1..250] | IsPrime(a) where a is 4*n^2+4*n-5 ] // _Vincenzo Librandi_, Aug 05 2010
%o (PARI) for(n=1,500,if(isprime(p=n^2-6),print1(p,", "))) \\ _Derek Orr_, Mar 11 2014
%K nonn,easy
%O 1,1
%A _Patrick De Geest_
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