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A012543
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sec(sinh(x)*arcsin(x))=1+12/4!*x^4+240/6!*x^6+15120/8!*x^8...
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0
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1, 0, 12, 240, 15120, 1355520, 182229696, 33914060544, 8338432876800, 2621544212398080, 1025337444571630592, 488344333262321119232, 278250960368816815149056, 186888075247900824522915840
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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[Sec[Sinh[x]ArcSin[x]], {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Apr 13 2015 *)
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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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