A012236 - OEIS

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A012236

tanh(arctan(atanh(x)))=x-2/3!*x^3+24/5!*x^5-496/7!*x^7+24192/9!*x^9...

1, -2, 24, -496, 24192, -1246464, 150408192, -12132673536, 3380973895680, -253363927449600, 217523969745223680, 4682388187242823680, 35388810383588767825920, 8821171867345211810119680 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..13.`
	CROSSREFS	`Sequence in context: A003102 A052712 A133413 * A186414 A187658 A138450` `Adjacent sequences: A012233 A012234 A012235 * A012237 A012238 A012239`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified May 20 02:57 EDT 2013. Contains 225446 sequences.