sinh(arctan(arctanh(x)))=x+1/3!*x^3+9/5!*x^5+281/7!*x^7+13233/9!*x^9...
A012234
sinh(arctan(arctanh(x)))=x+1/3!*x^3+9/5!*x^5+281/7!*x^7+13233/9!*x^9...
Terms
- a(0) =1a(1) =1a(2) =9a(3) =281a(4) =13233a(5) =1179729a(6) =144386553a(7) =25501409961
External references
- oeis: A012234