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A107198 Primes of the form x^2 + 84y^2. 2
109, 337, 373, 457, 613, 709, 757, 877, 1117, 1297, 1381, 1453, 1597, 1873, 1933, 2017, 2221, 2269, 2293, 2389, 2437, 2713, 3049, 3061, 3109, 3313, 3361, 3469, 4057, 4153, 4561, 4909, 4957, 5077, 5233, 5413, 5569, 5581, 5737, 5821, 6217 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Discriminant = -336. 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[1, 0, 84, 10000] (* see A106856 *)
PROG
(PARI) list(lim)=my(v=List(), w, t); for(x=1, sqrtint(lim\1), w=x^2; for(y=1, sqrtint((lim-w)\84), if(isprime(t=w+84*y^2), listput(v, t)))); Set(v) \\ Charles R Greathouse IV, Feb 10 2017
CROSSREFS
Sequence in context: A183349 A238682 A070180 * A020354 A142846 A166560
KEYWORD
nonn,easy
AUTHOR
T. D. Noe, May 13 2005
STATUS
approved

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)