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 A107184 #18 Feb 10 2017 14:26:15 %S A107184 79,139,271,331,349,421,661,691,739,751,829,859,1201,1231,1249,1321, %T A107184 1459,1489,1669,1699,1831,1879,2011,2131,2161,2551,2659,2749,2791, %U A107184 3049,3061,3109,3229,3319,3541,3691,3739,3919,3931,4021,4159,4519 %N A107184 Primes of the form x^2 + 75y^2. %C A107184 Discriminant = -300. See A107132 for more information. %H A107184 Vincenzo Librandi and Ray Chandler, <a href="/A107184/b107184.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107184 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 A107184 QuadPrimes2[1, 0, 75, 10000] (* see A106856 *) %o A107184 (PARI) list(lim)=my(v=List(),w,t); for(x=1, sqrtint(lim\1), w=x^2; for(y=1, sqrtint((lim-w)\75), if(isprime(t=w+75*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 10 2017 %K A107184 nonn,easy %O A107184 1,1 %A A107184 _T. D. Noe_, May 13 2005