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 A033243 #22 Jul 08 2025 19:47:52 %S A033243 67,71,83,103,131,167,211,263,269,277,293,317,349,389,467,557,607,619, %T A033243 643,709,743,797,859,967,997,1087,1091,1097,1109,1153,1193,1223,1229, %U A033243 1279,1297,1361,1433,1493,1511 %N A033243 Primes of form x^2+67*y^2. %D A033243 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989. %H A033243 Vincenzo Librandi and Ray Chandler, <a href="/A033243/b033243.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A033243 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 A033243 QuadPrimes2[1, 0, 67, 10000] (* see A106856 *) %K A033243 nonn,easy %O A033243 1,1 %A A033243 _N. J. A. Sloane_