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 A033255 #22 Jul 08 2025 19:49:17 %S A033255 167,311,353,569,823,1063,1303,1399,1433,1601,1607,1999,2111,2143, %T A033255 2591,2687,2879,2897,3121,3217,3457,3583,3593,3671,4057,4751,4943, %U A033255 4999,5303,5399,5711 %N A033255 Primes of form x^2+86*y^2. %D A033255 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989. %H A033255 Vincenzo Librandi and Ray Chandler, <a href="/A033255/b033255.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A033255 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 A033255 QuadPrimes2[1, 0, 86, 10000] (* see A106856 *) %K A033255 nonn,easy %O A033255 1,1 %A A033255 _N. J. A. Sloane_