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A201475 Primes of the form 2n^2 + 7. 1

%I

%S 7,79,457,3049,4057,5209,5839,7207,8719,11257,18439,19609,25999,28807,

%T 33289,36457,39769,41479,45007,48679,80809,93319,95929,109519,121039,

%U 130057,145807,155689,162457,169369,180007,209959,229849,272329

%N Primes of the form 2n^2 + 7.

%H Vincenzo Librandi, <a href="/A201475/b201475.txt">Table of n, a(n) for n = 1..5000</a>

%t Select[Table[2n^2+7,{n,0,900}],PrimeQ]

%o (Magma) [a: n in [0..400] | IsPrime(a) where a is 2*n^2+7];

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Dec 02 2011

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Last modified January 31 22:24 EST 2023. Contains 359981 sequences. (Running on oeis4.)