id:A106872 - OEIS Search Results

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Primes of the form 2x^2+xy+4y^2, with x and y any integer.

+0
2

2, 5, 7, 19, 41, 59, 71, 97, 101, 103, 107, 109, 113, 157, 163, 191, 193, 211, 233, 257, 281, 307, 311, 317, 359, 373, 397, 419, 421, 439, 443, 467, 479, 503, 541, 547, 563, 593, 599, 659, 661, 683, 691, 701, 727, 733, 751, 769, 877, 887, 907, 977, 997, 1033 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Discriminant=-31. See A106856 for more information.` `Primes p such that the polynomial x^3-x^2-1 is irreducible over Zp. The polynomial discriminant is also -31. - T. D. Noe (noe(AT)sspectra.com), May 13 2005`
	CROSSREFS	`Adjacent sequences: A106869 A106870 A106871 this_sequence A106873 A106874 A106875` `Sequence in context: A042449 A046115 A089443 this_sequence A071198 A041387 A096146`
	KEYWORD	`nonn,easy`
	AUTHOR	`T. D. Noe (noe(AT)sspectra.com), May 09 2005`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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