A012115 - OEIS

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A012115

cos(arcsin(arcsinh(x)))=1-1/2!*x^2+1/4!*x^4-49/6!*x^6+897/8!*x^8...

1, -1, 1, -49, 897, -96801, 6803457, -1275363153, 207592347393, -60889593787713, 17888210916886017, -7679611833095218545, 3530100224793651058305, -2109645360096014314212705 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	CROSSREFS	`Cf. A012248.` `Sequence in context: A175775 A110906 A193940 * A173246 A017765 A163005` `Adjacent sequences: A012112 A012113 A012114 * A012116 A012117 A012118`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 15 07:06 EST 2012. Contains 205694 sequences.