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 A139970 #17 Sep 08 2022 08:45:34
%S A139970 131,139,179,211,251,419,491,571,659,859,971,1091,1171,1291,1459,1499,
%T A139970 1531,1699,1811,1979,2011,2131,2339,2531,2539,2731,2851,2939,3019,
%U A139970 3251,3259,3299,3331,3371,3539,3571,3691,3779,3851,4091,4099,4211
%N A139970 Primes of the form 4x^2+4xy+131y^2.
%C A139970 Discriminant=-2080. See A139827 for more information.
%H A139970 Vincenzo Librandi and Ray Chandler, <a href="/A139970/b139970.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A139970 N. J. A. Sloane et al., <a href="https://oeis.org/wiki/Binary_Quadratic_Forms_and_OEIS">Binary Quadratic Forms and OEIS</a> (Index to related sequences, programs, references)
%F A139970 The primes are congruent to {51, 131, 139, 179, 211, 251, 259, 339, 419, 451, 459, 491} (mod 520).
%t A139970 QuadPrimes2[4, -4, 131, 10000] (* see A106856 *)
%o A139970 (Magma) [ p: p in PrimesUpTo(6000) | p mod 520 in [51, 131, 139, 179, 211, 251, 259, 339, 419, 451, 459, 491]]; // _Vincenzo Librandi_, Aug 02 2012
%K A139970 nonn,easy
%O A139970 1,1
%A A139970 _T. D. Noe_, May 02 2008