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 A107172 #19 Feb 10 2017 09:50:16 %S A107172 11,17,107,227,281,491,563,569,593,659,761,1187,1289,1361,1427,1451, %T A107172 1481,1553,1811,1889,1913,1931,2153,2243,2273,2411,2441,2459,2657, %U A107172 2939,3203,3209,3329,3449,3467,3593,3761,3779,3803,4259,4289,4457 %N A107172 Primes of the form 6x^2 + 11y^2. %C A107172 Discriminant = -264. See A107132 for more information. %H A107172 Vincenzo Librandi and Ray Chandler, <a href="/A107172/b107172.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A107172 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 A107172 QuadPrimes2[6, 0, 11, 10000] (* see A106856 *) %o A107172 (PARI) list(lim)=my(v=List(),w,t); for(x=0, sqrtint(lim\6), w=6*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 A107172 nonn,easy %O A107172 1,1 %A A107172 _T. D. Noe_, May 13 2005