A013121 - OEIS

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A013121

arctan(tanh(x)+log(x+1))=2*x-1/2!*x^2-16/3!*x^3+42/4!*x^4+748/5!*x^5...

2, -1, -16, 42, 748, -5130, -80792, 1139880, 15089632, -401063040, -3986514112, 203199458880, 1170901443424, -139120136531376, -67846807312832, 122712218206730880, -762584236008814848 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	CROSSREFS	`Sequence in context: A162005 A013125 A012967 * A012963 A013120 A012968` `Adjacent sequences: A013118 A013119 A013120 * A013122 A013123 A013124`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 14 08:56 EST 2012. Contains 205614 sequences.