id:A009022 - OEIS Search Results

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

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1, 0, -1, 3, -2, -20, 74, 98, -1532, 960, 41324, -105732, -1595912, 7998640, 85401224, -705417112, -6026865392, 76352075520, 537223559024, -10130428275792, -58185728893472, 1628892022801600, 7352490891960224, -313251680404802272 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Cos[ Log[ 1+Tanh[ x ] ] ]`
	CROSSREFS	`Sequence in context: A065038 A123225 A009028 this_sequence A009033 A018872 A105525` `Adjacent sequences: A009019 A009020 A009021 this_sequence A009023 A009024 A009025`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified July 4 01:34 EDT 2008. Contains 140787 sequences.

AT&T Labs Research