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A106877 Primes of the form 3x^2+xy+3y^2, with x and y nonnegative. +0
2
3, 7, 17, 83, 97, 157, 173, 223, 257, 307, 313, 397, 523, 587, 607, 643, 647, 733, 773, 787, 887, 937, 983, 1013, 1223, 1277, 1307, 1427, 1483, 1487, 1613, 1637, 1693, 1753, 1777, 1783, 1907, 2203, 2267, 2273, 2357, 2383, 2393, 2593, 2663, 2677 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-35. See A106856 for more information.

CROSSREFS

Sequence in context: A047981 A042077 A128343 this_sequence A041949 A102329 A069143

Adjacent sequences: A106874 A106875 A106876 this_sequence A106878 A106879 A106880

KEYWORD

nonn,easy

AUTHOR

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

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Last modified December 4 15:51 EST 2008. Contains 151308 sequences.


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