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A106861 Primes of the form x^2+xy+4y^2, with x and y nonnegative. +0
2
19, 31, 79, 109, 151, 181, 199, 211, 229, 271, 331, 349, 409, 421, 439, 499, 571, 601, 619, 631, 661, 691, 709, 769, 811, 829, 859, 919, 991, 1021, 1039, 1051, 1069, 1129, 1171, 1201, 1249, 1291, 1321, 1381, 1399, 1429, 1459, 1471, 1489, 1531, 1579 (list; graph; listen)
OFFSET

1,1

COMMENT

Discriminant=-15. See A106856 for more information.

CROSSREFS

Adjacent sequences: A106858 A106859 A106860 this_sequence A106862 A106863 A106864

Sequence in context: A033212 A104227 A032743 this_sequence A107168 A125602 A139847

KEYWORD

nonn,easy

AUTHOR

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

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.


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