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 A033254 #23 Jul 08 2025 19:49:09
%S A033254 89,101,149,229,281,349,389,409,421,461,509,569,661,701,761,769,829,
%T A033254 1021,1069,1109,1181,1249,1301,1361,1381,1409,1429,1481,1549,1709,
%U A033254 1721,1789,1801,1861,1889,2089,2129
%N A033254 Primes of form x^2+85*y^2.
%D A033254 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
%H A033254 Vincenzo Librandi and Ray Chandler, <a href="/A033254/b033254.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A033254 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 A033254 The primes are congruent to {1, 9, 21, 49, 69, 81, 89, 101, 121, 149, 161, 169, 189, 229, 281, 321} (mod 340). - _T. D. Noe_, Apr 29 2008
%t A033254 QuadPrimes2[1, 0, 85, 10000] (* see A106856 *)
%Y A033254 Cf. A139643.
%K A033254 nonn,easy
%O A033254 1,1
%A A033254 _N. J. A. Sloane_