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 A107195 #18 Feb 10 2017 14:42:10 %S A107195 7,19,199,223,283,307,367,439,607,643,859,1039,1231,1279,1291,1459, %T A107195 1483,1543,1627,1951,2131,2203,2371,2383,2539,2707,2719,2791,3079, %U A107195 3499,3547,3643,3727,3919,4003,4051,4231,4339,4423,4483,4507,4567 %N A107195 Primes of the form 7x^2 + 12y^2. %C A107195 Discriminant = -336. See A107132 for more information. %H A107195 Vincenzo Librandi and Ray Chandler, <a href="/A107195/b107195.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107195 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 A107195 QuadPrimes2[7, 0, 12, 10000] (* see A106856 *) %o A107195 (PARI) list(lim)=my(v=List(),w,t); for(x=1, sqrtint(lim\7), w=7*x^2; for(y=0, sqrtint((lim-w)\12), if(isprime(t=w+12*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 10 2017 %K A107195 nonn,easy %O A107195 1,1 %A A107195 _T. D. Noe_, May 13 2005