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A106975 Primes of the form 4x^2+3xy+6y^2, with x and y nonnegative. 2
13, 67, 199, 223, 313, 499, 523, 991, 1009, 1021, 1153, 1213, 1399, 1483, 1669, 1789, 1831, 1861, 1879, 2089, 2137, 2287, 2377, 2551, 2713, 2797, 2833, 3061, 3271, 3319, 3457, 3583, 3823, 3853, 3943, 4027, 4051, 4177, 4789, 5011, 5023 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-87. See A106856 for more information.

LINKS

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

MATHEMATICA

QuadPrimes[4, 3, 6, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A058380 A129746 A067863 * A086689 A141956 A137720

Adjacent sequences:  A106972 A106973 A106974 * A106976 A106977 A106978

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified June 18 17:38 EDT 2013. Contains 226355 sequences.