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A033236
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Primes of form x^2+57*y^2.
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2
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61, 73, 157, 229, 277, 313, 349, 397, 457, 541, 577, 613, 709, 733, 757, 769, 853, 937, 997, 1033, 1069, 1201, 1213, 1297, 1429, 1453, 1489, 1597, 1621, 1657, 1669, 1753, 1873, 1993, 2053, 2113, 2137
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OFFSET
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1,1
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REFERENCES
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David A. Cox, "Primes of the Form x^2 + n y^2", Wiley, 1989.
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LINKS
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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)
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FORMULA
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Primes congruent to {1, 25, 49, 61, 73, 85, 121, 157, 169} (mod 228). - T. D. Noe, Apr 29 2008
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MATHEMATICA
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QuadPrimes2[1, 0, 57, 10000] (* see A106856 *)
With[{nn=50}, Take[Union[Select[#[[1]]+57#[[2]]&/@(Tuples[Range[nn], 2]^2), PrimeQ]], nn]] (* Harvey P. Dale, Jun 17 2014 *)
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CROSSREFS
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Cf. A139643.
Sequence in context: A179012 A227980 A227520 * A260808 A141457 A112998
Adjacent sequences: A033233 A033234 A033235 * A033237 A033238 A033239
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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