A033239 - OEIS

%I #20 Aug 07 2014 11:04:52

%S 61,97,257,269,293,317,461,613,773,977,1033,1097,1201,1217,1601,1613,

%T 1669,1721,1993,1997,2221,2269,2309,2549,2557,2657,2969,3001,3037,

%U 3049,3089,3253,3313,3389,3461,3877

%N Primes of form x^2+61*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="/A033239/b033239.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, 61, 10000] (* see A106856 *)

%K nonn,easy

%O 1,1

%A _N. J. A. Sloane_.