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A107187 Primes of the form 7x^2 + 11y^2. 2
7, 11, 107, 127, 211, 239, 263, 547, 571, 739, 743, 919, 1019, 1163, 1283, 1471, 1579, 1583, 1619, 1667, 1759, 2111, 2339, 2503, 2543, 2683, 2767, 2879, 3571, 3607, 3691, 3739, 3847, 3907, 4099, 4111, 4127, 4391, 4463, 4831, 4967, 5147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-308. See A107132 for more information.

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[7, 0, 11, 10000] (* see A106856 *)

PROG

(PARI) list(lim)=my(v=List(), w, t); for(x=0, sqrtint(lim\7), w=7*x^2; for(y=0, sqrtint((lim-w)\11), if(isprime(t=w+11*y^2), listput(v, t)))); Set(v) \\ Charles R Greathouse IV, Feb 10 2017

CROSSREFS

Sequence in context: A289286 A123763 A018680 * A132958 A241189 A057737

Adjacent sequences:  A107184 A107185 A107186 * A107188 A107189 A107190

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 13 2005

STATUS

approved

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Last modified February 25 07:33 EST 2020. Contains 332221 sequences. (Running on oeis4.)