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 A139853 #17 Sep 08 2022 08:45:33
%S A139853 11,43,67,107,163,179,211,331,347,379,443,491,499,547,571,659,683,739,
%T A139853 827,883,907,947,1019,1051,1163,1171,1187,1283,1451,1499,1523,1579,
%U A139853 1619,1667,1723,1747,1787,2003,2011,2027,2083,2179,2251,2339,2347
%N A139853 Primes of the form 11x^2+6xy+11y^2.
%C A139853 Discriminant=-448. See A139827 for more information.
%H A139853 Vincenzo Librandi and Ray Chandler, <a href="/A139853/b139853.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A139853 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 A139853 The primes are congruent to {11, 43, 51} (mod 56).
%t A139853 Union[QuadPrimes2[11, 6, 11, 10000], QuadPrimes2[11, -6, 11, 10000]] (* see A106856 *)
%o A139853 (Magma) [ p: p in PrimesUpTo(3000) | p mod 56 in {11, 43, 51}]; // _Vincenzao Librandi_, Jul 29 2012
%K A139853 nonn,easy
%O A139853 1,1
%A A139853 _T. D. Noe_, May 02 2008