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A106952
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Primes of the form 3x^2-3xy+7y^2, with x and y nonnegative.
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2
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3, 7, 13, 37, 43, 67, 73, 97, 103, 127, 157, 163, 193, 223, 277, 283, 307, 313, 337, 367, 373, 397, 433, 457, 463, 487, 523, 547, 577, 607, 613, 643, 673, 727, 733, 757, 787, 823, 853, 877, 883, 907, 937, 967, 997, 1033, 1063, 1087, 1093, 1117, 1123
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OFFSET
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1,1
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COMMENTS
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Discriminant=-75.
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LINKS
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MATHEMATICA
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QuadPrimes2[3, -3, 7, 10000] (* see A106856 *)
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PROG
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(Magma) [ p: p in PrimesUpTo(2000) | p mod 30 in {3, 7, 13} ]; // Vincenzo Librandi, Jul 22 2012
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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