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A012088
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arcsin(arcsin(arctan(x)))=x+12/5!*x^5-88/7!*x^7+13968/9!*x^9...
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0
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1, 0, 12, -88, 13968, -597440, 132709184, -15685157504, 5014687029504, -1181425359497216, 528315488687774720, -207409825492284028928, 125603683629593633394688, -73594034552724198387236864
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..13.
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcSin[ArcTan[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Jun 30 2021 *)
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CROSSREFS
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Sequence in context: A126507 A181704 A009657 * A083825 A181944 A359311
Adjacent sequences: A012085 A012086 A012087 * A012089 A012090 A012091
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KEYWORD
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sign
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AUTHOR
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Patrick Demichel (patrick.demichel(AT)hp.com)
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STATUS
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approved
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