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Search: id:A139970
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| A139970 |
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Primes of the form 4x^2+4xy+131y^2. |
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+0
2
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| 131, 139, 179, 211, 251, 419, 491, 571, 659, 859, 971, 1091, 1171, 1291, 1459, 1499, 1531, 1699, 1811, 1979, 2011, 2131, 2339, 2531, 2539, 2731, 2851, 2939, 3019, 3251, 3259, 3299, 3331, 3371, 3539, 3571, 3691, 3779, 3851, 4091, 4099, 4211
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-2080. See A139827 for more information.
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FORMULA
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The primes are congruent to {51, 131, 139, 179, 211, 251, 259, 339, 419, 451, 459, 491} (mod 520).
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CROSSREFS
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Sequence in context: A084549 A116519 A139646 this_sequence A039558 A045164 A134951
Adjacent sequences: A139967 A139968 A139969 this_sequence A139971 A139972 A139973
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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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