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 A107185 #18 Feb 10 2017 14:26:29 %S A107185 19,23,83,163,271,367,419,479,491,503,571,619,919,947,967,1031,1051, %T A107185 1151,1187,1259,1327,1499,1543,1607,1619,1783,1831,2087,2239,2287, %U A107185 2399,2411,2531,2591,2671,2699,3083,3307,3323,3391,3407,3467,3847 %N A107185 Primes of the form 4x^2 + 19y^2. %C A107185 Discriminant = -304. See A107132 for more information. %H A107185 Vincenzo Librandi and Ray Chandler, <a href="/A107185/b107185.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107185 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) %t A107185 QuadPrimes2[4, 0, 19, 10000] (* see A106856 *) %o A107185 (PARI) list(lim)=my(v=List(),w,t); for(x=0, sqrtint(lim\4), w=4*x^2; for(y=1, sqrtint((lim-w)\19), if(isprime(t=w+19*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 10 2017 %K A107185 nonn,easy %O A107185 1,1 %A A107185 _T. D. Noe_, May 13 2005