A009715 - OEIS

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A009715

Expansion of tan(tanh(x))*cos(x).

1, -3, -3, 273, -5159, -62139, 16414101, -1357293927, 59192332081, 5204089208589, -1943937262679379, 331586038355507361, -32236263434125968887, -1484274347735103183531, 1139055571050751311941445 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ Tanh[ x ] ]Cos[ x ] ( Odd Part *)`
	CROSSREFS	`Sequence in context: A113457 A113466 A007301 * A138662 A009011 A009498` `Adjacent sequences: A009712 A009713 A009714 * A009716 A009717 A009718`
	KEYWORD	`sign`
	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 02:46 EST 2012. Contains 205689 sequences.