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%I #15 Sep 08 2022 08:45:55
%S 2,5,6,7,8,9,14,16,21,27,28,34,42,44,47,48,50,51,62,63,65,68,70,75,76,
%T 79,82,84,93,96,98,103,106,114,120,121,124,131,133,138,139,147,148,
%U 149,156,166,169,173,174,182,195,197,201,203,216,218,225,229,237,240,243,247,253,275,282,292,299,300,307,309,310
%N Numbers k such that 2*k^4 - 1 is a prime.
%H Vincenzo Librandi, <a href="/A182783/b182783.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[350],PrimeQ[2#^4-1]&] (* _Harvey P. Dale_, Sep 12 2011 *)
%o (Magma) [n: n in [1..1000]| IsPrime(2*n^4-1)]
%Y Cf. A182784, A182785.
%K nonn,easy
%O 1,1
%A _Vincenzo Librandi_, Dec 02 2010