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 A107186 #18 Feb 10 2017 14:28:20 %S A107186 101,157,197,313,353,593,701,709,733,853,929,1033,1213,1217,1297,1301, %T A107186 1597,1657,1901,1949,2053,2069,2153,2341,2441,2477,2677,2741,2857, %U A107186 2861,2897,3329,3361,3557,3581,3617,3697,3709,3733,3797,4013,4241 %N A107186 Primes of the form x^2 + 76y^2. %C A107186 Discriminant = -304. See A107132 for more information. %H A107186 Vincenzo Librandi and Ray Chandler, <a href="/A107186/b107186.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107186 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 A107186 QuadPrimes2[1, 0, 76, 10000] (* see A106856 *) %o A107186 (PARI) list(lim)=my(v=List(),w,t); for(x=1, sqrtint(lim\1), w=x^2; for(y=1, sqrtint((lim-w)\76), if(isprime(t=w+76*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 10 2017 %K A107186 nonn,easy %O A107186 1,1 %A A107186 _T. D. Noe_, May 13 2005