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A106871 Primes of the form 2x^2+xy+4y^2, with x and y nonnegative. +0
2
2, 7, 41, 59, 101, 107, 109, 233, 257, 281, 307, 311, 397, 419, 421, 503, 599, 659, 691, 733, 751, 907, 1051, 1061, 1087, 1103, 1163, 1217, 1249, 1279, 1291, 1307, 1321, 1361, 1373, 1433, 1471, 1489, 1597, 1621, 1693, 1733, 1777, 1787, 1831 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-31. See A106856 for more information.

MATHEMATICA

QuadPrimes[2, 1, 4, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A028441 A006455 A130715 this_sequence A107376 A087804 A006677

Adjacent sequences: A106868 A106869 A106870 this_sequence A106872 A106873 A106874

KEYWORD

nonn,easy

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 09 2005

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.


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