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A013140 exp(tanh(x)+arctan(x))=1+2*x+4/2!*x^2+4/3!*x^3-16/4!*x^4-88/5!*x^5... 0

%I #4 Feb 24 2012 12:51:20

%S 1,2,4,4,-16,-88,64,2496,4096,-106624,-480896,6875136,54717440,

%T -673392640,-7775895552,99550288896,1454255472640,-21279326830592,

%U -360442602684416,6159283224084480,116460747215831040

%N exp(tanh(x)+arctan(x))=1+2*x+4/2!*x^2+4/3!*x^3-16/4!*x^4-88/5!*x^5...

%K sign

%O 0,2

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

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Last modified September 17 14:54 EDT 2024. Contains 375987 sequences. (Running on oeis4.)