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A012066
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arctan(arcsin(arcsin(x)))=x+12/5!*x^5+248/7!*x^7+21648/9!*x^9...
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0
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1, 0, 12, 248, 21648, 2241088, 390536000, 91111189120, 28811937609984, 11657540060256256, 5912796798580972544, 3665610214092467574784, 2729315998404117133692928, 2402622277659457905178820608
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[ArcTan[ArcSin[ArcSin[x]]], {x, 0, nn}], x] Range[0, nn-1]!, {2, -1, 2}]] (* Harvey P. Dale, Dec 09 2011 *)
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CROSSREFS
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KEYWORD
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nonn
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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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