A012729 - OEIS

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A012729

arcsin(arctanh(x)*arctan(x))=2/2!*x^2+328/6!*x^6+1402272/10!*x^10...

2, 328, 1402272, 34476662400, 2862572968849920, 606547177566513039360, 275433333396552433711226880, 237761902453820639998996848476160 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	LINKS	`Table of n, a(n) for n=0..7.`
	MATHEMATICA	`With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcTanh[x]ArcTan[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 4}]] ( Ray Chandler, Nov 28 2016 *)`
	CROSSREFS	`Sequence in context: A282430 A012601 A012606 * A173750 A088250 A142355` `Adjacent sequences: A012726 A012727 A012728 * A012730 A012731 A012732`
	KEYWORD	`nonn`
	AUTHOR	`Patrick Demichel (patrick.demichel(AT)hp.com)`
	STATUS	`approved`

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Last modified January 27 12:01 EST 2020. Contains 331295 sequences. (Running on oeis4.)