A009709 - OEIS

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A009709

Expansion of tan(tan(x)/cosh(x)).

1, 1, 17, 593, 19425, 1598177, 158823537, 20206883505, 3739345763009, 800168319488705, 218377697922437073, 71589148444259595281, 27561852243967184213153, 12547454880768646146119585 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	MATHEMATICA	`Tan[ Tan[ x ]/Cosh[ x ] ] (* Odd Part *)`
	CROSSREFS	`Sequence in context: A041547 A041544 A202407 * A094133 A162490 A142744` `Adjacent sequences: A009706 A009707 A009708 * A009710 A009711 A009712`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and signs tested Mar 15 1997 by Olivier Gerard.`

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Last modified February 17 11:35 EST 2012. Contains 206011 sequences.