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A106884 Primes of the form 3x^2-3xy+4y^2, with x and y nonnegative. 2
3, 13, 61, 79, 127, 199, 211, 283, 313, 337, 373, 433, 571, 601, 727, 757, 829, 859, 883, 907, 919, 937, 1069, 1093, 1213, 1291, 1297, 1303, 1327, 1447, 1531, 1543, 1609, 1621, 1663, 1699, 1741, 1777, 1873, 2053, 2083, 2089, 2161, 2239, 2341 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-39.

LINKS

Vincenzo Librandi and Ray Chandler, Table of n, a(n) for n = 1..10000 [First 1000 terms from Vincenzo Librandi]

N. J. A. Sloane et al., Binary Quadratic Forms and OEIS (Index to related sequences, programs, references)

MATHEMATICA

QuadPrimes2[3, -3, 4, 10000] (* see A106856 *)

CROSSREFS

Primes in A243681.

Sequence in context: A292796 A020007 A112731 * A232611 A238445 A328704

Adjacent sequences:  A106881 A106882 A106883 * A106885 A106886 A106887

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified August 4 14:11 EDT 2020. Contains 336201 sequences. (Running on oeis4.)