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Search: id:A139947
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| A139947 |
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Primes of the form 17x^2+21y^2. |
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+0
1
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| 17, 89, 101, 257, 293, 353, 461, 509, 593, 761, 773, 797, 1097, 1109, 1181, 1277, 1301, 1361, 1613, 1721, 1889, 1973, 2141, 2393, 2609, 2729, 2789, 2957, 3041, 3209, 3449, 3617, 3821, 4133, 4157, 4217, 4241, 4373, 4637, 4793, 4877, 4973
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Discriminant=-1428. See A139827 for more information.
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FORMULA
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The primes are congruent to {17, 89, 101, 185, 257, 293, 341, 353, 461, 509, 545, 593, 689, 713, 761, 773, 797, 965, 1097, 1109, 1181, 1277, 1301, 1361, 1385} (mod 1428).
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MATHEMATICA
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QuadPrimes[17, 0, 21, 10000] (* see A106856 *)
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CROSSREFS
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Sequence in context: A118533 A061679 A033654 this_sequence A162930 A138338 A057638
Adjacent sequences: A139944 A139945 A139946 this_sequence A139948 A139949 A139950
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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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