A013089 - OEIS

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A013089

cos(arcsinh(x)+arcsin(x))=1-4/2!*x^2+16/4!*x^4-280/6!*x^6+8320/8!*x^8...

1, -4, 16, -280, 8320, -628000, 51414400, -8930646400, 1426497280000, -444950339392000, 117131784689920000, -57406016313168640000, 22526613550121973760000, -15953943354322290304000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A152153 A144988 A067172 * A203105 A095956 A014731` `Adjacent sequences: A013086 A013087 A013088 * A013090 A013091 A013092`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 23:53 EST 2012. Contains 205860 sequences.