A033243 - OEIS

%I #22 Jul 08 2025 19:47:52

%S 67,71,83,103,131,167,211,263,269,277,293,317,349,389,467,557,607,619,

%T 643,709,743,797,859,967,997,1087,1091,1097,1109,1153,1193,1223,1229,

%U 1279,1297,1361,1433,1493,1511

%N Primes of form x^2+67*y^2.

%D David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.

%H 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 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 QuadPrimes2[1, 0, 67, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_