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A106870
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Primes of the form x^2+xy+7y^2, with x and y nonnegative.
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2
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7, 13, 19, 31, 37, 43, 67, 73, 79, 97, 103, 127, 139, 151, 157, 163, 181, 193, 199, 211, 223, 229, 241, 271, 277, 283, 307, 313, 349, 367, 373, 379, 397, 409, 421, 439, 457, 463, 487, 499, 523, 541, 571, 577, 601, 607, 613, 619, 631, 643, 661, 673, 709, 727
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OFFSET
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1,1
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COMMENTS
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Discriminant=-27.
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LINKS
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MATHEMATICA
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QuadPrimes2[1, 1, 7, 10000] (* see A106856 *)
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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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