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A013413
cosh(arcsin(x)-arctan(x))=1+90/6!*x^6-2520/8!*x^8+368550/10!*x^10...
0
1, 0, 0, 90, -2520, 368550, -29313900, 7122965850, -1133998866000, 432213196164750, -115564330313932500, 64225795369647161250, -25965004352151980115000, 19884500689553832175593750
OFFSET
0,4
MATHEMATICA
With[{nn=30}, Take[CoefficientList[Series[Cosh[ArcSin[x]-ArcTan[x]], {x, 0, nn}], x]Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Dec 20 2012 *)
CROSSREFS
Sequence in context: A013357 A013358 A013414 * A013411 A013415 A367458
KEYWORD
sign
AUTHOR
Patrick Demichel (patrick.demichel(AT)hp.com)
STATUS
approved