id:A073592 - OEIS Search Results

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Euler transform of negative integers.

+0
1

1, -1, -2, -1, 0, 4, 4, 7, 3, -2, -9, -17, -25, -24, -13, -1, 32, 61, 97, 111, 112, 74, 8, -108, -243, -392, -512, -569, -542, -358, -33, 473, 1078, 1788, 2395, 2865, 2955, 2569, 1496, -245, -2751, -5783, -9121, -12299, -14739, -15806, -14719, -10930, -3813, 6593, 20284, 36139, 53081, 68620, 80539 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`1/A(x) is g.f. for A000219.`
	LINKS	`N. J. A. Sloane, Transforms`
	FORMULA	`G.f.: A(x) = Product_{k>0} (1-x^k)^k. a(n) = -1/nSum_{k=1..n} sigma[2](k)a(n-k).`
	CROSSREFS	`Cf. A001478, A001157, A000219.` `Sequence in context: A109167 A066426 A100887 this_sequence A077929 A086095 A112334` `Adjacent sequences: A073589 A073590 A073591 this_sequence A073593 A073594 A073595`
	KEYWORD	`sign`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Aug 28 2002`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research