id:A006642 - OEIS Search Results

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Class number of quadratic field with discriminant -4n+1.
(Formerly M0152)

+0
2

1, 1, 1, 2, 1, 3, 3, 2, 4, 1, 5, 2, 4, 3, 1, 7, 5, 3, 6, 2, 8, 5, 3, 8, 2, 10, 2, 5, 5, 3, 10, 7, 4, 10, 1, 11, 5, 8, 2, 13, 4, 9, 4, 3, 14, 4, 7, 5, 12, 2, 15, 6, 7, 12, 4, 13, 2, 11, 3, 14, 4, 8, 8, 10, 3, 19, 10, 4 (list; graph; listen)

	OFFSET	`1,4`
	REFERENCES	`D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.`
	CROSSREFS	`Cf. A006643.` `Sequence in context: A128133 A032434 A002347 this_sequence A094435 A133341 A111492` `Adjacent sequences: A006639 A006640 A006641 this_sequence A006643 A006644 A006645`
	KEYWORD	`nonn`
	AUTHOR	`njas, Mira Bernstein (mira(AT)math.berkeley.edu)`

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Last modified September 5 01:44 EDT 2008. Contains 143476 sequences.

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