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Search: id:A139941
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| A139941 |
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Primes of the form 19x^2+8xy+19y^2. |
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+0
2
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| 19, 79, 199, 379, 571, 619, 631, 751, 919, 1171, 1279, 1399, 1459, 1471, 1579, 1699, 1759, 1831, 1951, 1999, 2011, 2131, 2179, 2251, 2311, 2551, 2659, 2719, 2731, 2851, 3079, 3271, 3319, 3331, 3391, 3511, 3559, 3631, 3691, 3931, 4099, 4111
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-1380. See A139827 for more information.
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FORMULA
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The primes are congruent to {19, 79, 91, 199, 319, 379, 451, 511, 559, 571, 619, 631, 751, 799, 871, 919, 931, 1111, 1171, 1279, 1339, 1351} (mod 1380).
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MATHEMATICA
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Union[QuadPrimes[19, 8, 19, 10000], QuadPrimes[19, -8, 19, 10000]] (* see A106856 *)
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CROSSREFS
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Sequence in context: A139871 A142789 A158491 this_sequence A127270 A053665 A050522
Adjacent sequences: A139938 A139939 A139940 this_sequence A139942 A139943 A139944
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe (noe(AT)sspectra.com), May 02 2008
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