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A012129 tanh(arcsin(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+65681/9!*x^9... 0

%I

%S 1,-3,41,-1243,65681,-5335283,616216121,-95919970123,19349625251361,

%T -4909180152449763,1529770153928451401,-574346328696763158203,

%U 255703860384773029976241,-133196988269151890206719443

%N tanh(arcsin(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+65681/9!*x^9...

%K sign

%O 0,2

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

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Last modified October 16 23:07 EDT 2021. Contains 348047 sequences. (Running on oeis4.)