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A106954
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Primes of the form 4x^2+2xy+5y^2, with x and y any integer.
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2
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5, 7, 11, 17, 43, 47, 61, 73, 131, 137, 139, 149, 191, 199, 229, 233, 239, 251, 263, 277, 283, 311, 347, 349, 359, 389, 397, 443, 457, 461, 463, 467, 499, 541, 557, 577, 587, 613, 617, 631, 643, 647, 653, 691, 719, 727, 739, 757, 761, 769, 809, 821, 823
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OFFSET
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1,1
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COMMENTS
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Discriminant=-76. See A106856 for more information.
Primes p such that the polynomial x^3-2x-2 is irreducible over Zp. The polynomial discriminant is also -76. - T. D. Noe, May 13 2005
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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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Union[QuadPrimes[4, 2, 5, 10000], QuadPrimes[4, -2, 5, 10000]] (* see A106856 *)
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CROSSREFS
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Sequence in context: A046140 A023241 A174357 * A027755 A089785 A118386
Adjacent sequences: A106951 A106952 A106953 * A106955 A106956 A106957
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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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