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Class number of binary quadratic forms with fundamental discriminant A003658(n),n>=2.
(Formerly M0077)

+0
3

1, 1, 2, 1, 1, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 4, 1, 2, 2, 1, 2, 2, 2, 2, 1, 2, 2, 1, 1, 2, 4, 1, 1, 4, 2, 2, 2, 4, 1, 4, 2, 4, 1, 2, 4, 1, 2, 4, 4, 2, 1, 2, 1, 2, 2, 2, 1, 1, 2, 4, 4, 2, 2, 2, 4, 4, 3, 2, 1, 2, 2, 1, 2, 2, 2, 3, 4, 2, 2, 1, 4, 1, 4, 1, 2, 4, 1, 2, 2, 4, 2, 4, 1, 6, 1, 6, 4, 2, 2, 1, 2, 2, 4 (list; graph; listen)

	OFFSET	`2,3`
	REFERENCES	`D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 236, 241.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`S. R. Finch, Class number theory`
	CROSSREFS	`Cf. A087048, A079896.` `Sequence in context: A053256 A102418 A106032 this_sequence A112758 A029437 A131335` `Adjacent sequences: A003643 A003644 A003645 this_sequence A003647 A003648 A003649`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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