arctanh(sec(x)*tan(x))=x+7/3!*x^3+185/5!*x^5+12367/7!*x^7...
A012798
arctanh(sec(x)*tan(x))=x+7/3!*x^3+185/5!*x^5+12367/7!*x^7...
Terms
- a(0) =1a(1) =7a(2) =185a(3) =12367a(4) =1558865a(5) =316097527a(6) =94003171145
External references
- oeis: A012798
A012798
arctanh(sec(x)*tan(x))=x+7/3!*x^3+185/5!*x^5+12367/7!*x^7...