%I #6 Sep 08 2022 08:46:01
%S 29,89,509,1289,3389,3929,7229,8009,9689,10589,16829,24509,32009,
%T 33629,38729,44189,48029,60509,67289,81929,84509,92489,98009,100829,
%U 118589,134489,158429,188189,200009,216329,224729,228989,242009,250889
%N Primes of the form 5n^2 + 9.
%H Vincenzo Librandi, <a href="/A201487/b201487.txt">Table of n, a(n) for n = 1..5000</a>
%t Select[Table[5n^2+9,{n,0,1000}],PrimeQ]
%o (Magma) [a: n in [0..600]  IsPrime(a) where a is 5*n^2+9];
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Dec 03 2011
