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A012090 arctan(arcsin(arctan(x))) = x - 3/3!*x^3 + 57/5!*x^5 - 2587/7!*x^7 + 217137/9!*x^9 - ... 0

%I

%S 1,-3,57,-2587,217137,-29025587,5664605801,-1519556355275,

%T 536514935904609,-241225069255390307,134580033555427233689,

%U -91237165395466088195963,73877505225687035803070353,-70425423338543411535873624467,78071169657855750497737512497097

%N arctan(arcsin(arctan(x))) = x - 3/3!*x^3 + 57/5!*x^5 - 2587/7!*x^7 + 217137/9!*x^9 - ...

%K sign

%O 0,2

%A Patrick Demichel (patrick.demichel(AT)hp.com)

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Last modified May 26 20:51 EDT 2022. Contains 354092 sequences. (Running on oeis4.)