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A139843 Primes of the form 6x^2+17y^2. 3
17, 23, 41, 71, 113, 167, 233, 311, 401, 431, 449, 479, 503, 521, 617, 641, 719, 743, 809, 839, 857, 881, 887, 911, 929, 983, 1031, 1049, 1151, 1193, 1217, 1289, 1319, 1367, 1433, 1439, 1553, 1559, 1601, 1697, 1847, 2063, 2081, 2111, 2153, 2207 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-408. See A139827 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)

FORMULA

The primes are congruent to {17, 23, 41, 65, 71, 95, 113, 143, 167, 209, 215, 233, 311, 329, 335, 377, 401} (mod 408).

MATHEMATICA

QuadPrimes2[6, 0, 17, 10000] (* see A106856 *)

PROG

(MAGMA) [ p: p in PrimesUpTo(3000) | p mod 408 in {17, 23, 41, 65, 71, 95, 113, 143, 167, 209, 215, 233, 311, 329, 335, 377, 401}]; // Vincenzo Librandi, Jul 29 2012

CROSSREFS

Sequence in context: A156567 A231332 A243137 * A151953 A102874 A086532

Adjacent sequences:  A139840 A139841 A139842 * A139844 A139845 A139846

KEYWORD

nonn,easy

AUTHOR

T. D. Noe, May 02 2008

STATUS

approved

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Last modified November 27 16:30 EST 2014. Contains 250240 sequences.