A009570 - OEIS

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A009570

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

0, 1, -1, 1, -4, 16, -16, -104, -64, 4096, -256, -176384, -1024, 11186176, -4096, -951870464, -16384, 104932704256, -65536, -14544442425344, -262144, 2475749027086336, -1048576, -507711943251329024, -4194304, 123460740095112380416, -16777216 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	MATHEMATICA	`Sinh[ Log[ 1+Tanh[ x ] ] ]`
	CROSSREFS	`Sequence in context: A206838 A206900 A202680 * A140299 A119007 A043052` `Adjacent sequences: A009567 A009568 A009569 * A009571 A009572 A009573`
	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 03:44 EST 2012. Contains 205860 sequences.