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A096664 Numerators of terms in series expansion of sin(tan(x)). 16

%I #13 Aug 08 2018 04:44:19

%S 1,1,-1,-55,-143,-968167,-7000033,-571772647,-843598411471,

%T -1263845119891,-740683182137153,-474904166544135457,

%U 2379183287545454197,237037449673450822122569,155015924346163216960553093,50568039962561468889366023,1801162678607996830733199407999,2359789149102567189423591182268559

%N Numerators of terms in series expansion of sin(tan(x)).

%H G. C. Greubel, <a href="/A096664/b096664.txt">Table of n, a(n) for n = 0..200</a>

%e sin(tan(x)) = x + 1/6*x^3 - 1/40*x^5 - 55/1008*x^7 - 143/3456*x^9 + ...

%t Numerator[Take[CoefficientList[Series[Sin[Tan[x]], {x,0,40}], x], {2,-1,2}]] (* _G. C. Greubel_, Nov 17 2016 *)

%Y Cf. A096671, A096712, A096716, A045688, A045689, A096717, A096718.

%Y Cf. A003706.

%K sign,frac

%O 0,4

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

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Last modified April 23 07:57 EDT 2024. Contains 371905 sequences. (Running on oeis4.)