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 A139851 #17 Sep 08 2022 08:45:33
%S A139851 29,37,53,109,149,197,277,317,373,389,421,541,557,613,653,701,709,757,
%T A139851 821,877,1061,1093,1117,1213,1229,1373,1381,1429,1453,1493,1549,1597,
%U A139851 1621,1709,1733,1789,1877,1901,1933,1997,2053,2069,2213,2221,2237
%N A139851 Primes of the form 4x^2+4xy+29y^2.
%C A139851 Discriminant=-448. See A139827 for more information.
%H A139851 Vincenzo Librandi and Ray Chandler, <a href="/A139851/b139851.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A139851 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 A139851 The primes are congruent to {29, 37, 53} (mod 56).
%t A139851 QuadPrimes2[4, -4, 29, 10000] (* see A106856 *)
%o A139851 (Magma) [ p: p in PrimesUpTo(3000) | p mod 56 in {29, 37, 53}]; // _Vincenzo Librandi_, Jul 29 2012
%K A139851 nonn,easy
%O A139851 1,1
%A A139851 _T. D. Noe_, May 02 2008