%I #6 Sep 08 2022 08:46:01
%S 3,43,1123,2203,3643,5443,7603,13003,19843,28123,32803,49003,61603,
%T 68443,83203,117043,146203,167443,178603,214243,226843,239803,280843,
%U 356443,406123,423403,441043,496123,595123,616003,637243,680803
%N Primes of the form 5n^2 - 2.
%H Vincenzo Librandi, <a href="/A201784/b201784.txt">Table of n, a(n) for n = 1..5000</a>
%t Select[Table[5n^2-2,{n,1,2000}],PrimeQ]
%o (Magma) [a: n in [1..400] | IsPrime(a) where a is 5*n^2-2];
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Dec 05 2011