tanh(arctan(arctan(x)))=x-6/3!*x^3+184/5!*x^5-13136/7!*x^7...
A012208
tanh(arctan(arctan(x)))=x-6/3!*x^3+184/5!*x^5-13136/7!*x^7...
Terms
- a(0) =1a(1) =-6a(2) =184a(3) =-13136a(4) =1679488a(5) =-335723264a(6) =96492653568
External references
- oeis: A012208