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A106936 Primes of the form 3x^2-2xy+6y^2, with x and y nonnegative. 1
3, 7, 23, 71, 79, 131, 139, 227, 283, 347, 379, 419, 479, 487, 499, 503, 571, 607, 619, 683, 691, 719, 743, 823, 827, 839, 947, 991, 1031, 1051, 1091, 1151, 1163, 1231, 1303, 1319, 1439, 1451, 1459, 1499, 1559, 1567, 1627, 1723, 1831, 2003, 2011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-68. See A106856 for more information.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

QuadPrimes[3, -2, 6, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A148701 A029891 A151454 * A088704 A148702 A194691

Adjacent sequences:  A106933 A106934 A106935 * A106937 A106938 A106939

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified May 24 07:09 EDT 2013. Contains 225617 sequences.