A009420 - OEIS

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A009420

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

0, 1, 1, 2, -8, -11, -19, 846, -1896, -111, -228159, 2453010, -11353440, 173733429, -3565851587, 41759789358, -501111404080, 9579604130881, -176443305192159, 2870638703204994, -53275482352387864, 1134671091039714069 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+x ]*Exp[ Tanh[ x ] ]`
	CROSSREFS	`Sequence in context: A143189 A056550 A074263 * A189328 A090746 A174114` `Adjacent sequences: A009417 A009418 A009419 * A009421 A009422 A009423`
	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 15 05:45 EST 2012. Contains 205694 sequences.