A012969 - OEIS

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A012969

cosh(arctan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+19/4!*x^4-140/5!*x^5...

1, 0, 4, -6, 19, -140, 910, -5250, 39925, -414360, 4244200, -42242750, 500292775, -7036001700, 98944220050, -1395690728250, 22347132003625, -399376247582000, 7158271817183500, -130527261318021750 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A001683 A053892 A013126 * A057789 A174936 A123169` `Adjacent sequences: A012966 A012967 A012968 * A012970 A012971 A012972`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 12:14 EST 2012. Contains 205783 sequences.