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 A139887 #16 Sep 08 2022 08:45:34
%S A139887 2,107,113,137,233,347,443,617,683,827,947,953,977,1163,1187,1283,
%T A139887 1523,1667,1787,1913,2003,2027,2153,2297,2417,2633,2657,2753,2843,
%U A139887 2963,3137,3203,3257,3347,3467,3593,3803,3833,4337,4523,4547,4643
%N A139887 Primes of the form 2x^2+105y^2.
%C A139887 Discriminant=-840. See A139827 for more information.
%H A139887 Vincenzo Librandi and Ray Chandler, <a href="/A139887/b139887.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A139887 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 A139887 The primes are congruent to {2, 107, 113, 137, 233, 323, 347, 443, 473, 617, 683, 737, 827} (mod 840).
%t A139887 QuadPrimes2[2, 0, 105, 10000] (* see A106856 *)
%o A139887 (Magma) [ p: p in PrimesUpTo(6000) | p mod 840 in {2, 107, 113, 137, 233, 323, 347, 443, 473, 617, 683, 737, 827}]; // _Vincenzo Librandi_, Jul 30 2012
%K A139887 nonn,easy
%O A139887 1,1
%A A139887 _T. D. Noe_, May 02 2008