A153423 - OEIS

%I #8 Sep 08 2022 08:45:39

%S 241,251,263,277,293,311,331,353,431,461,563,601,641,683,727,773,821,

%T 977,1033,1091,1151,1213,1277,1481,1553,1627,1861,2027,2113,2383,2477,

%U 2671,3083,3191,3301,3413,3527,3643,3761,3881,4003,4127,4253,4643,5051

%N Primes of the form n^2+9n+241.

%H Vincenzo Librandi, <a href="/A153423/b153423.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Table[n^2+9n+241,{n,0,7000}],PrimeQ] (* _Vincenzo Librandi_, Jul 14 2012 *)

%o (Magma) [a: n in [0..100] | IsPrime(a) where a is n^2+9*n+241]; // _Vincenzo Librandi_, Jul 14 2012

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 26 2008