This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A182783 #19 Apr 15 2025 14:57:56 %S A182783 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 A182783 79,82,84,93,96,98,103,106,114,120,121,124,131,133,138,139,147,148, %U A182783 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 A182783 Numbers k such that 2*k^4 - 1 is a prime. %H A182783 Vincenzo Librandi, <a href="/A182783/b182783.txt">Table of n, a(n) for n = 1..1000</a> %t A182783 Select[Range[350],PrimeQ[2#^4-1]&] (* _Harvey P. Dale_, Sep 12 2011 *) %o A182783 (Magma) [n: n in [1..1000]| IsPrime(2*n^4-1)]; %Y A182783 Cf. A182784, A182785. %K A182783 nonn,easy %O A182783 1,1 %A A182783 _Vincenzo Librandi_, Dec 02 2010