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A106943 Primes of the form 3x^2+xy+6y^2, with x and y any integer. 1
3, 29, 89, 103, 109, 151, 157, 191, 271, 379, 409, 419, 499, 503, 557, 587, 593, 613, 659, 677, 787, 853, 857, 977, 1031, 1069, 1103, 1181, 1193, 1237, 1297, 1321, 1493, 1523, 1531, 1571, 1619, 1637, 1657, 1693, 1723, 1787, 1871, 1873, 1949, 1993 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-71.

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

Union[QuadPrimes2[3, 1, 6, 10000], QuadPrimes2[3, -1, 6, 10000]] (* see A106856 *)

CROSSREFS

Sequence in context: A087210 A288918 A190942 * A281712 A106942 A211621

Adjacent sequences:  A106940 A106941 A106942 * A106944 A106945 A106946

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 09 2005

STATUS

approved

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Last modified September 15 22:10 EDT 2019. Contains 327088 sequences. (Running on oeis4.)