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A106968
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Primes of the form 3x^2-xy+7y^2, with x and y nonnegative.
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1
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3, 7, 17, 29, 31, 109, 127, 167, 173, 191, 241, 349, 359, 373, 383, 409, 431, 443, 479, 509, 523, 547, 617, 619, 673, 691, 727, 839, 853, 857, 863, 911, 953, 991, 1091, 1163, 1171, 1187, 1193, 1213, 1361, 1439, 1459, 1489, 1571, 1607, 1621, 1663
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OFFSET
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1,1
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COMMENTS
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Discriminant=-83.
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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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MATHEMATICA
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QuadPrimes2[3, -1, 7, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A076033 A029519 A045424 * A191081 A079779 A083991
Adjacent sequences: A106965 A106966 A106967 * A106969 A106970 A106971
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe, May 09 2005
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STATUS
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approved
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