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 A033253 #22 Jul 08 2025 19:49:03 %S A033253 83,227,557,659,751,773,811,983,1061,1231,1409,1423,1531,1553,1847, %T A033253 2111,2347,2357,2399,2417,2683,2999,3037,3109,3371,3517,3581,3613, %U A033253 3929,4111,4211,4357,4391,4591,4643 %N A033253 Primes of form x^2+83*y^2. %D A033253 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989. %H A033253 Vincenzo Librandi and Ray Chandler, <a href="/A033253/b033253.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi] %H A033253 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 A033253 QuadPrimes2[1, 0, 83, 10000] (* see A106856 *) %K A033253 nonn,easy %O A033253 1,1 %A A033253 _N. J. A. Sloane_