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A139848 Primes of the form 7x^2+15y^2. 0
7, 43, 67, 127, 163, 463, 487, 547, 823, 883, 907, 967, 1087, 1303, 1327, 1423, 1663, 1723, 1747, 2083, 2143, 2347, 2503, 2647, 2683, 2767, 3067, 3187, 3343, 3607, 3823, 3847, 3907, 3943, 4027, 4243, 4327, 4363, 4447, 4603, 4663, 4783, 5023 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Discriminant=-420. See A139827 for more information.

FORMULA

The primes are congruent to {7, 43, 67, 127, 163, 247, 403} (mod 420).

MATHEMATICA

QuadPrimes[7, 0, 15, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A176252 A118703 A139832 * A052029 A168026 A142102

Adjacent sequences:  A139845 A139846 A139847 * A139849 A139850 A139851

KEYWORD

nonn,easy

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 02 2008

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Last modified February 17 07:41 EST 2012. Contains 205998 sequences.