A009075 - OEIS

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A009075

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

1, -1, -19, -397, -7943, 64551, 43466469, 7570028763, 1224976528753, 203222727578703, 33945910273599581, 5001827577751516739, 201232322297192328041, -395596937210124802877833 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Cos[ Tan[ x ]Cosh[ x ] ] ( Even Part *)`
	CROSSREFS	`Sequence in context: A158592 A072359 A094737 * A015694 A099277 A172740` `Adjacent sequences: A009072 A009073 A009074 * A009076 A009077 A009078`
	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 17 21:13 EST 2012. Contains 206085 sequences.