id:A061574 - OEIS Search Results

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Simple quadratic fields (i.e. with a unique prime factorization).

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-163, -67, -43, -19, -11, -7, -3, -2, -1, 1, 2, 3, 5, 6, 7, 11, 13, 14, 17, 19, 21, 22, 23, 29, 31, 33, 37, 38, 41, 43, 46, 47, 53, 57, 59, 61, 62, 67, 69, 71, 73, 77, 83, 86, 89, 93, 94, 97, 101, 103, 107, 109, 113, 118, 127, 129, 131, 133, 134, 137, 139, 141, 149 (list; graph; listen)

	OFFSET	`-9,1`
	COMMENT	`-9 <= m < 0: a(m)= -A003173(-m); a(0)= 1; n > 0: a(n)= A003172(n).`
	REFERENCES	`G. H. Hardy and E. M. Wright, An Introduction to the Theory of Numbers, 5th ed., Oxford Univ. Press, 1979, ch. 14.`
	LINKS	`Index entries for sequences related to quadratic fields`
	CROSSREFS	`Union of A003173 and A003172. Some subsequences: A048981, A003174, A003172, see also A003173.` `Sequence in context: A022151 A036914 A030442 this_sequence A057604 A132250 A142940` `Adjacent sequences: A061571 A061572 A061573 this_sequence A061575 A061576 A061577`
	KEYWORD	`sign`
	AUTHOR	`Frank Ellermann (Frank.Ellermann(AT)t-online.de), May 17 2001`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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