A201787 - OEIS

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

%S 239,599,839,1439,3119,4799,9239,34439,41399,45119,59399,63839,123239,

%T 139439,142799,186239,206039,235439,244199,248639,257639,285599,

%U 290399,300119,320039,361799,465119,508799,588239,602039,608999,666119

%N Primes of the form 5n^2 - 6.

%H Vincenzo Librandi, <a href="/A201787/b201787.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[5n^2-6,{n,1,1000}],PrimeQ]

%o (Magma) [a: n in [1..400] | IsPrime(a) where a is 5*n^2-6];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 05 2011