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 A107158 #18 Feb 09 2017 16:24:51 %S A107158 3,17,29,71,311,317,347,419,431,449,617,743,857,881,941,947,1013,1091, %T A107158 1151,1163,1193,1217,1451,1601,1847,1877,2063,2069,2153,2207,2357, %U A107158 2411,2459,2591,2777,2861,2963,3023,3089,3257,3359,3407,3461,3533 %N A107158 Primes of the form 3x^2 + 17y^2. %C A107158 Discriminant = -204. See A107132 for more information. %H A107158 Vincenzo Librandi and Ray Chandler, <a href="/A107158/b107158.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107158 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 A107158 QuadPrimes2[3, 0, 17, 10000] (* see A106856 *) %o A107158 (PARI) list(lim)=my(v=List(),w,t); for(x=0, sqrtint(lim\3), w=3*x^2; for(y=0, sqrtint((lim-w)\17), if(isprime(t=w+17*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 09 2017 %K A107158 nonn,easy %O A107158 1,1 %A A107158 _T. D. Noe_, May 13 2005