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 A033250 #23 Jul 08 2025 19:48:40
%S A033250 79,103,127,199,313,337,367,433,439,601,607,673,727,751,823,919,937,
%T A033250 991,1039,1063,1153,1231,1249,1297,1303,1327,1447,1543,1609,1663,1759,
%U A033250 1777,1873,1951,1993,1999,2089
%N A033250 Primes of form x^2+78*y^2.
%D A033250 David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
%H A033250 Vincenzo Librandi and Ray Chandler, <a href="/A033250/b033250.txt">Table of n, a(n) for n = 1..10000</a> [First 1000 terms from Vincenzo Librandi]
%H A033250 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 A033250 The primes are congruent to {1, 25, 49, 55, 79, 103, 121, 127, 199, 217, 289, 295} (mod 312). - _T. D. Noe_, Apr 29 2008
%t A033250 QuadPrimes2[1, 0, 78, 10000] (* see A106856 *)
%Y A033250 Cf. A139643.
%K A033250 nonn,easy
%O A033250 1,1
%A A033250 _N. J. A. Sloane_