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Class number of real quadratic field with discriminant A003658(n+1).
(Formerly M0051)

+0
1

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

	OFFSET	`1,12`
	REFERENCES	`D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.` `H. Cohen, Course in Computational Alg. No. Theory, Springer, 1993, p. 505.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`T. D. Noe, Table of n, a(n) for n=1..3000` `S. R. Finch, Class number theory` `Eric Weisstein's World of Mathematics, Class Number`
	CROSSREFS	`Sequence in context: A088530 A058060 A088323 this_sequence A071625 A049100 A030612` `Adjacent sequences: A003649 A003650 A003651 this_sequence A003653 A003654 A003655`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.

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