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Search: id:A139881
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| A139881 |
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Primes of the form 2x^2+2xy+89y^2. |
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+0
2
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| 2, 89, 101, 113, 149, 173, 233, 269, 353, 401, 509, 569, 701, 773, 797, 809, 821, 857, 881, 929, 941, 977, 1013, 1061, 1109, 1193, 1217, 1277, 1289, 1409, 1481, 1493, 1601, 1637, 1721, 1901, 1949, 1997, 2213, 2237, 2273, 2297, 2309, 2333, 2357
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-708. See A139827 for more information.
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FORMULA
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The primes are congruent to {2, 65, 77, 89, 101, 113, 149, 161, 173, 185, 209, 221, 233, 269, 305, 329, 353, 365, 377, 401, 437, 485, 509, 533, 545, 569, 581, 629, 689, 701} (mod 708).
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MATHEMATICA
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QuadPrimes[2, -2, 89, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A012733 A058459 A105268 this_sequence A161676 A023302 A041967
Adjacent sequences: A139878 A139879 A139880 this_sequence A139882 A139883 A139884
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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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