A012643 - OEIS

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A012643

cosh(arcsinh(x)*cos(x))=1+1/2!*x^2-15/4!*x^4+225/6!*x^6-3423/8!*x^8...

1, 1, -15, 225, -3423, 58305, -3367023, 750974497, -195722347967, 56832659001729, -19485490128305615, 8027995798338091873, -3957958222909649739039, 2309625363907160407164225 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A189774 A189156 A001024 * A067222 A154597 A041422` `Adjacent sequences: A012640 A012641 A012642 * A012644 A012645 A012646`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.