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A139880
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Primes of the form 13x^2+2xy+13y^2.
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2
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13, 61, 157, 181, 229, 349, 397, 661, 733, 829, 853, 997, 1021, 1069, 1237, 1669, 1693, 1741, 1861, 2029, 2341, 2677, 2749, 2917, 3037, 3181, 3253, 3373, 3517, 3541, 3709, 3853, 3877, 4021, 4093, 4261, 4357, 4549, 4597, 4861, 4933, 5101
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Discriminant=-672. See A139827 for more information.
Also primes of the forms 13x^2+4xy+52y^2 and 13x^2+8xy+40y^2. See A140633. - T. D. Noe (noe(AT)sspectra.com), May 19 2008
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FORMULA
| The primes are congruent to {13, 61, 157} (mod 168).
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MATHEMATICA
| Union[QuadPrimes[13, 2, 13, 10000], QuadPrimes[13, -2, 13, 10000]] (* see A106856 *)
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CROSSREFS
| Sequence in context: A086361 A119151 A081589 * A127876 A047673 A141725
Adjacent sequences: A139877 A139878 A139879 * A139881 A139882 A139883
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KEYWORD
| nonn,easy
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AUTHOR
| T. D. Noe (noe(AT)sspectra.com), May 02 2008
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