arctan(tanh(x)*cos(x))=x-7/3!*x^3+165/5!*x^5-10827/7!*x^7...
A012689
arctan(tanh(x)*cos(x))=x-7/3!*x^3+165/5!*x^5-10827/7!*x^7...
Terms
- a(0) =1a(1) =-7a(2) =165a(3) =-10827a(4) =1316585a(5) =-257028847a(6) =73616009805
External references
- oeis: A012689