A009255 - OEIS

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A009255

Expansion of exp(tan(x)/exp(x)).

1, 1, -1, 0, 9, -28, 65, 294, -2751, 21496, -69343, 143154, 4340193, -44055100, 549236753, -3053333154, 25428876417, 103583035888, -1719503726527, 62167764668394, -580794950152287, 11376539928963260, -67379231311376719 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	MATHEMATICA	`Exp[ Tan[ x ]/Exp[ x ] ]`
	CROSSREFS	`Sequence in context: A041359 A034126 A034677 * A062451 A065959 A017669` `Adjacent sequences: A009252 A009253 A009254 * A009256 A009257 A009258`
	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 13 08:12 EST 2012. Contains 205451 sequences.