id:A009808 - OEIS Search Results

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Expansion of tanh(tan(tan(x))).

+0
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1, 2, 8, -400, -54016, -6545408, -886739968, -130488590336, -17561155108864, -157860190420992, 1926815267611213824, 1659729586864045162496, 1201487932870410723393536, 858251595734608746586832896 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Tanh[ Tan[ Tan[ x ] ] ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A012342 A012348 A014185 this_sequence A035129 A003301 A000890` `Adjacent sequences: A009805 A009806 A009807 this_sequence A009809 A009810 A009811`
	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 November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research