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A033239
Primes of form x^2+61*y^2.
2
61, 97, 257, 269, 293, 317, 461, 613, 773, 977, 1033, 1097, 1201, 1217, 1601, 1613, 1669, 1721, 1993, 1997, 2221, 2269, 2309, 2549, 2557, 2657, 2969, 3001, 3037, 3049, 3089, 3253, 3313, 3389, 3461, 3877
OFFSET
1,1
REFERENCES
David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
LINKS
Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]
N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)
MATHEMATICA
QuadPrimes2[1, 0, 61, 10000] (* see A106856 *)
CROSSREFS
Sequence in context: A088787 A020350 A142108 * A106390 A142191 A086126
KEYWORD
nonn,easy
AUTHOR
STATUS
approved