A201856 - OEIS

%I #6 Sep 08 2022 08:46:01

%S 5,29,197,389,509,797,2309,4229,6269,10949,11549,17669,19997,22469,

%T 24197,33797,51197,55109,61949,67709,75269,76829,79997,84869,96797,

%U 102149,119069,135197,141509,156797,161309,168197,175229,184829

%N Primes of the form 8n^2 - 3.

%H Vincenzo Librandi, <a href="/A201856/b201856.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[8n^2-3,{n,1,1000}],PrimeQ]

%o (Magma) [a: n in [1..400] | IsPrime(a) where a is 8*n^2-3];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 06 2011