A009018 - OEIS

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A009018

Expansion of cos(ln(1+ln(1+x))).

1, 0, -1, 6, -39, 295, -2589, 26026, -295754, 3755016, -52729546, 811837268, -13601028438, 246312375686, -4793646410058, 99730695561532, -2207506199891660, 51757576802639920, -1280121375188444260 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Cos[ Log[ 1+Log[ 1+x ] ] ]`
	CROSSREFS	`Sequence in context: A153392 A122827 A103194 * A135890 A067273 A187117` `Adjacent sequences: A009015 A009016 A009017 * A009019 A009020 A009021`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 14 19:37 EST 2012. Contains 205663 sequences.