id:A009257 - OEIS Search Results

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

+0
1

1, 1, 0, -2, 4, 6, -74, 190, 1128, -14336, 51616, 404856, -7330520, 41023048, 250083744, -7532037344, 65189204416, 185746926720, -13324842809792, 175157684686144, -215786634724224, -35458746254274944, 711274631768613760 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Exp[ Tanh[ Log[ 1+x ] ] ]`
	CROSSREFS	`Sequence in context: A045662 A084324 A066220 this_sequence A098757 A056012 A066719` `Adjacent sequences: A009254 A009255 A009256 this_sequence A009258 A009259 A009260`
	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 November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research