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Search: id:A106921
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A106921 Primes of the form x^2+xy+15y^2, with x and y nonnegative. +0
1
17, 71, 139, 163, 197, 223, 317, 373, 383, 389, 439, 461, 479, 521, 547, 631, 641, 677, 727, 733, 743, 787, 827, 1019, 1063, 1103, 1181, 1229, 1237, 1327, 1361, 1373, 1511, 1559, 1619, 1657, 1693, 1747, 1823, 1907, 1913, 1951, 2113, 2129, 2131 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-59. See A106856 for more information.

MATHEMATICA

QuadPrimes[1, 1, 15, 10000] (* see A106856 *)

CROSSREFS

Sequence in context: A039407 A043230 A044010 this_sequence A105414 A157910 A141959

Adjacent sequences: A106918 A106919 A106920 this_sequence A106922 A106923 A106924

KEYWORD

nonn,easy

AUTHOR

T. D. Noe (noe(AT)sspectra.com), May 09 2005

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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