A009693 - OEIS

This site is supported by donations to The OEIS Foundation.

A009693

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

1, 2, 8, 48, -256, -6656, 930816, -94216192, 9099706368, -822565076992, 27885670498304, 20948024601608192, -10620485000782413824, 3800373452911396519936, -1166459964091299721641984 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	MATHEMATICA	`Tan[ Tan[ Tanh[ x ] ] ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A058928 A173841 A004141 * A192251 A104190 A152661` `Adjacent sequences: A009690 A009691 A009692 * A009694 A009695 A009696`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

Content is available under The OEIS End-User License Agreement .

Last modified February 16 20:23 EST 2012. Contains 205962 sequences.