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A107133
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Primes of the form 4x^2+7y^2.
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3
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7, 11, 23, 43, 67, 71, 79, 107, 127, 151, 163, 179, 191, 211, 239, 263, 331, 347, 359, 379, 431, 443, 463, 487, 491, 499, 547, 571, 599, 631, 659, 683, 739, 743, 751, 823, 827, 863, 883, 907, 911, 919, 947, 967, 991, 1019, 1031, 1051, 1087, 1103, 1163
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OFFSET
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1,1
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COMMENTS
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Discriminant=-112. See A107132 for more information.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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FORMULA
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Except for 7, the primes are congruent to {11, 15, 23} (mod 28). - T. D. Noe, May 02 2008
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MATHEMATICA
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QuadPrimes[4, 0, 7, 10000] (* see A106856 *)
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CROSSREFS
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Cf. A139827.
Sequence in context: A175625 A082496 A210001 * A079138 A163848 A111671
Adjacent sequences: A107130 A107131 A107132 * A107134 A107135 A107136
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe, May 13 2005
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STATUS
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approved
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