arctanh(arctanh(x)*cos(x)) = x+1/3!*x^3+13/5!*x^5+677/7!*x^7+54937/9!*x^9...
A012746
arctanh(arctanh(x)*cos(x)) = x+1/3!*x^3+13/5!*x^5+677/7!*x^7+54937/9!*x^9...
Terms
- a(0) =1a(1) =1a(2) =13a(3) =677a(4) =54937a(5) =6248713a(6) =988579109a(7) =212756765101
External references
- oeis: A012746