sinh(arctan(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+58001/9!*x^9...

A012225

sinh(arctan(tanh(x)))=x-3/3!*x^3+41/5!*x^5-1243/7!*x^7+58001/9!*x^9...

Terms

    a(0) =1a(1) =-3a(2) =41a(3) =-1243a(4) =58001a(5) =-1956083a(6) =-740509639a(7) =509169335477

External references