A012057 - OEIS

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A012057

arcsinh(sin(arctanh(x)))=x+4/5!*x^5-80/7!*x^7-3440/9!*x^9-764800/11!*x^11...

1, 0, 4, -80, -3440, -764800, -107953600, -25833184000, -6745073504000, -2368021859840000, -968030415297920000, -487629248007416320000, -285882353240737277440000, -197729299896592542208000000 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A057875 A187543 A012824 * A102063 A002436 A013031` `Adjacent sequences: A012054 A012055 A012056 * A012058 A012059 A012060`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.