id:A009776 - OEIS Search Results

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

+0
1

0, 1, -1, -3, 12, -25, -15, 623, -4592, 18909, 17595, -1233551, 13641276, -81119597, -105681667, 10102782675, -148962722880, 1158387845177, 1940315387607, -234950313889819, 4330346354150860, -41597707520306049, -85160442362115351 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Tanh[ Log[ 1+x ] ]*Cos[ x ]`
	CROSSREFS	`Sequence in context: A028725 A047166 A076506 this_sequence A068967 A071355 A110859` `Adjacent sequences: A009773 A009774 A009775 this_sequence A009777 A009778 A009779`
	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 September 7 15:23 EDT 2008. Contains 143483 sequences.

AT&T Labs Research