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A107145
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Primes of the form x^2+40y^2.
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29
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41, 89, 241, 281, 401, 409, 449, 521, 569, 601, 641, 761, 769, 809, 881, 929, 1009, 1049, 1129, 1201, 1249, 1289, 1321, 1361, 1409, 1481, 1489, 1601, 1609, 1721, 1801, 1889, 2081, 2089, 2129, 2161, 2281, 2441, 2521, 2609, 2689, 2729, 2801
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OFFSET
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1,1
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COMMENTS
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Discriminant=-160. See A107132 for more information.
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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FORMULA
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The primes are congruent to {1, 9} (mod 40). - T. D. Noe, Apr 29 2008
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MATHEMATICA
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QuadPrimes[1, 0, 40, 10000] (* see A106856 *)
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PROG
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(MAGMA) [ p: p in PrimesUpTo(3000) | p mod 40 in {1, 9} ]; // Vincenzo Librandi, Jul 24 2012
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CROSSREFS
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Cf. A139643.
Sequence in context: A142411 A139924 A155572 * A087857 A139995 A044179
Adjacent sequences: A107142 A107143 A107144 * A107146 A107147 A107148
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KEYWORD
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nonn,easy
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AUTHOR
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T. D. Noe, May 13 2005
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STATUS
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approved
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