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A107009
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Primes of the form 5x^2+xy+5y^2, with x and y nonnegative.
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2
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5, 11, 53, 71, 89, 137, 191, 257, 311, 353, 389, 419, 443, 467, 521, 647, 683, 797, 863, 929, 977, 1013, 1049, 1103, 1109, 1181, 1301, 1367, 1373, 1499, 1511, 1637, 1721, 1901, 1907, 2003, 2099, 2237, 2267, 2333, 2381, 2423, 2447, 2531, 2663
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OFFSET
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1,1
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COMMENTS
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Discriminant=-99.
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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[5, 1, 5, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A089004 A197958 A094107 * A228865 A149527 A201180
Adjacent sequences: A107006 A107007 A107008 * A107010 A107011 A107012
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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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