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 A033229 #25 Jul 08 2025 19:46:12
%S A033229 43,67,163,193,211,331,337,379,457,499,547,571,673,739,883,907,1009,
%T A033229 1033,1051,1129,1171,1201,1297,1579,1723,1747,1801,1873,2011,2017,
%U A033229 2083,2137,2179,2251,2347,2377,2473
%N A033229 Primes of form x^2+42*y^2.
%D A033229 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
%H A033229 Vincenzo Librandi and Ray Chandler, <a href="/A033229/b033229.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A033229 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)
%F A033229 Primes congruent to {1, 25, 43, 67, 121, 163} (mod 168). - _T. D. Noe_, Apr 29 2008
%t A033229 QuadPrimes2[1, 0, 42, 10000] (* see A106856 *)
%Y A033229 Cf. A139643.
%K A033229 nonn,easy
%O A033229 1,1
%A A033229 _N. J. A. Sloane_