id:A003654 - OEIS Search Results

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Fundamental unit of Q(sqrt(n)) has norm -1; also square-free n such that Pell equation x^2 - n y^2 = -1 is soluble.
(Formerly M1366)

+0
6

2, 5, 10, 13, 17, 26, 29, 37, 41, 53, 58, 61, 65, 73, 74, 82, 85, 89, 97, 101, 106, 109, 113, 122, 130, 137, 145, 149, 157, 170, 173, 181, 185, 193, 197, 202, 218, 226, 229, 233, 241, 257, 265, 269, 274, 277, 281, 290, 293, 298, 313, 314, 317, 337, 346, 349, 353, 362 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.`
	LINKS	`S. R. Finch, Class number theory`
	CROSSREFS	`Cf. A031396, A031397, A003814.` `Adjacent sequences: A003651 A003652 A003653 this_sequence A003655 A003656 A003657` `Sequence in context: A020893 A003814 A031396 this_sequence A047617 A135467 A018571`
	KEYWORD	`nonn`
	AUTHOR	`njas, Mira Bernstein`

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Last modified May 11 10:28 EDT 2008. Contains 139662 sequences.

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