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A012446
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arcsin(arctan(x)*tan(x))=2/2!*x^2+280/6!*x^6-2688/8!*x^8+1016608/10!*x^10...
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0
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2, 0, 280, -2688, 1016608, -44971520, 22528934272, -2475890192384, 1731096311210496, -365422134993502208, 343466758613102303232, -121096429560806448922624, 146997236520941470929985536
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OFFSET
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0,1
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LINKS
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MATHEMATICA
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With[{nn=30}, Take[CoefficientList[Series[ArcSin[ArcTan[x]Tan[x]], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Nov 05 2013 *)
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CROSSREFS
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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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