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A106881 Primes of the form x^2-xy+9y^2, with x and y nonnegative. 1
11, 29, 71, 79, 109, 149, 151, 179, 191, 211, 239, 281, 331, 359, 379, 389, 401, 421, 431, 449, 491, 499, 541, 569, 571, 599, 631, 641, 659, 701, 709, 739, 751, 809, 821, 911, 919, 991, 1009, 1019, 1031, 1051, 1061, 1129, 1171, 1201, 1229, 1289, 1381 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-35. See A106856 for more information.

MATHEMATICA

QuadPrimes[1, -1, 9, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A043919 A120946 A099909 * A106880 A135064 A179502

Adjacent sequences:  A106878 A106879 A106880 * A106882 A106883 A106884

KEYWORD

nonn,easy

AUTHOR

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

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Last modified February 16 23:45 EST 2012. Contains 205978 sequences.