A009648 - OEIS

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A009648

Expansion of tan(ln(1+x))/exp(x).

0, 1, -3, 10, -44, 255, -1841, 15818, -156960, 1762709, -22076535, 304867506, -4600188108, 75280188035, -1327718893749, 25103478695090, -506480711742496, 10860420245412873, -246630317697276235, 5912837973247721914 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Tan[ Log[ 1+x ] ]/Exp[ x ]`
	CROSSREFS	`Sequence in context: A167995 A000608 A205803 * A007125 A102911 A096752` `Adjacent sequences: A009645 A009646 A009647 * A009649 A009650 A009651`
	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 16 21:51 EST 2012. Contains 205978 sequences.