arctanh(tan(x)*sin(x))=2/2!*x^2+4/4!*x^4+302/6!*x^6+8104/8!*x^8...
A012372
arctanh(tan(x)*sin(x))=2/2!*x^2+4/4!*x^4+302/6!*x^6+8104/8!*x^8...
Terms
- a(0) =2a(1) =4a(2) =302a(3) =8104a(4) =1189562a(5) =113466604a(6) =28069843622
External references
- oeis: A012372