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A033207
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Primes of form x^2+7*y^2.
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7
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7, 11, 23, 29, 37, 43, 53, 67, 71, 79, 107, 109, 113, 127, 137, 149, 151, 163, 179, 191, 193, 197, 211, 233, 239, 263, 277, 281, 317, 331, 337, 347, 359, 373, 379, 389, 401, 421, 431, 443, 449, 457, 463, 487, 491
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| D. Cox, "Primes of Form x^2 + n y^2", Wiley, 1989.
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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FORMULA
| The primes are congruent to {1, 7, 9, 11, 15, 23, 25} (mod 28). - T. D. Noe (noe(AT)sspectra.com), Apr 29 2008
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MATHEMATICA
| QuadPrimes[1, 0, 7, 10000] (* see A106856 *)
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CROSSREFS
| Cf. A002344, A002345
Cf. A139643.
Sequence in context: A175651 A039511 A103667 * A095084 A067790 A089056
Adjacent sequences: A033204 A033205 A033206 * A033208 A033209 A033210
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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