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A033209
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Primes of form x^2+11*y^2.
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4
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11, 47, 53, 103, 163, 199, 257, 269, 311, 397, 401, 419, 421, 499, 587, 599, 617, 683, 757, 773, 863, 883, 907, 911, 929, 991, 1021, 1087, 1109, 1123, 1181, 1237, 1291, 1307, 1367, 1433, 1439, 1543, 1567, 1571, 1609, 1621, 1697, 1699, 1753, 1873, 1907, 2003
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OFFSET
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1,1
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COMMENTS
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Primes p such that the polynomial x^3-x^2-x-1 mod p has 3 zeros. Compare A106279. - T. D. Noe, May 02 2005
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REFERENCES
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D. Cox, "Primes of Form x^2 + n y^2", Wiley, 1989.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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MATHEMATICA
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QuadPrimes[1, 0, 11, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A177370 A126672 A179786 * A107216 A158809 A044113
Adjacent sequences: A033206 A033207 A033208 * A033210 A033211 A033212
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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Extended by T. D. Noe, Apr 17 2012
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STATUS
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approved
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