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Denominators of terms in series expansion of (sin(tan(x)) - tan(sin(x))) / (arcsin(arctan(x)) - arctan(arcsin(x))).
2

%I #12 Feb 25 2018 22:54:56

%S 1,3,1890,11907,1650310200,270320810760,851510553894000,

%T 1003164583542521400,480315202600159246320000,

%U 393378150929530422736080000,62700543476657854079903791200000,1975067119514722403516969422800000,76571832941186160874811737622400000

%N Denominators of terms in series expansion of (sin(tan(x)) - tan(sin(x))) / (arcsin(arctan(x)) - arctan(arcsin(x))).

%D V. I. Arnold, Huygens and Barrow, Newton and Hooke, Birkhäuser, Basel, 1990.

%H G. C. Greubel, <a href="/A096730/b096730.txt">Table of n, a(n) for n = 0..180</a>

%e (sin(tan(x)) - tan(sin(x))) / (arcsin(arctan(x)) - arctan(arcsin(x))) = 1 + 5/3*x^2 + 1313/1890*x^4 - 2773/11907*x^6 - 701933647/1650310200*x^8 - 86849082293/270320810760*x^10 - ...

%t Denominator[Take[CoefficientList[Series[(Sin[Tan[x]] - Tan[Sin[x]]) / (ArcSin[ArcTan[x]] - ArcTan[ArcSin[x]]), {x, 0, 10}], x], {1, -1, 2}]] (* _G. C. Greubel_, Nov 20 2016 *)

%Y Cf. A096725, A096722, A096717, A096718, A096664, A096671, A096712, A096716, A045688, A045689, A096719, A096720.

%K nonn,frac

%O 0,2

%A _N. J. A. Sloane_, Aug 15 2004