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A012458
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arcsin(arctan(x)^2) = 2/2!*x^2 - 16/4!*x^4 + 488/6!*x^6 - 30336/8!*x^8...
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1
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2, -16, 488, -30336, 3303072, -556926720, 135234491520, -44790227865600, 19434264780034560, -10703464305128755200, 7296385856008015226880, -6031102564833737842851840, 5942962739028147945628999680
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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]^2], {x, 0, nn}], x] Range[0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Dec 13 2011 *)
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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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EXTENSIONS
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Definition corrected by Harvey P. Dale, Dec 13 2011
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STATUS
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approved
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