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 A107216 #18 Feb 10 2017 16:22:39 %S A107216 11,47,53,257,269,311,401,419,587,599,617,683,773,863,911,929,1109, %T A107216 1181,1307,1367,1433,1439,1571,1697,1907,2003,2039,2069,2237,2381, %U A107216 2579,2621,2729,2777,2843,2897,2927,3041,3191,3257,3323,3623,3677 %N A107216 Primes of the form 9x^2 + 11y^2. %C A107216 Discriminant = -396. See A107132 for more information. %H A107216 Vincenzo Librandi and Ray Chandler, <a href="/A107216/b107216.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107216 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 A107216 QuadPrimes2[9, 0, 11, 10000] (* see A106856 *) %o A107216 (PARI) list(lim)=my(v=List(),w,t); for(x=0, sqrtint(lim\9), w=9*x^2; for(y=1, sqrtint((lim-w)\11), if(isprime(t=w+11*y^2), listput(v,t)))); Set(v) \\ _Charles R Greathouse IV_, Feb 10 2017 %K A107216 nonn,easy %O A107216 1,1 %A A107216 _T. D. Noe_, May 13 2005