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 A199367 #18 Sep 01 2025 14:15:37
%S A199367 3,31,107,499,863,5323,6911,13499,23327,107999,131071,364499,442367,
%T A199367 530603,1000187,1149983,2634011,2915999,3764767,4121203,5771587,
%U A199367 6243583,7263391,7812499,9199871,13499999,14326307,14895499,15185663,16693123,19651999,20000843,20710867,24513947,29659499,31049567,33461707,38654387,50597347,53248211,57395627,59547743
%N A199367 Primes of the form 4*k^3 - 1.
%C A199367 See comment in A199307.
%H A199367 Vincenzo Librandi, <a href="/A199367/b199367.txt">Table of n, a(n) for n = 1..800</a>
%t A199367 Select[Table[4n^3-1,{n,1,8000}],PrimeQ] (* _Vincenzo Librandi_, Nov 23 2011 *)
%o A199367 (Magma) [a: n in [1..250] | IsPrime(a) where a is 4*n^3-1]; // _Vincenzo Librandi_, Nov 23 2011
%Y A199367 Cf. A199307, A199366.
%K A199367 nonn,changed
%O A199367 1,1
%A A199367 _N. J. A. Sloane_, Nov 05 2011