A201962 - OEIS

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

%S 7,37,157,487,997,2557,2887,3607,6247,13687,14437,21157,24007,28087,

%T 31357,33637,34807,44887,46237,63997,90247,106087,114487,120997,

%U 132247,146407,153757,176887,184957,187687,195997,204487,210247,222007

%N Primes of the form 10n^2 - 3.

%H Vincenzo Librandi, <a href="/A201962/b201962.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[10n^2-3,{n,1,800}],PrimeQ]

%o (Magma) [a: n in [1..400] | IsPrime(a) where a is 10*n^2-3];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 07 2011