sin(tan(arctanh(x)))=x+3/3!*x^3+41/5!*x^5+1019/7!*x^7+12305/9!*x^9...

A012175

sin(tan(arctanh(x)))=x+3/3!*x^3+41/5!*x^5+1019/7!*x^7+12305/9!*x^9...

Terms

    a(0) =1a(1) =3a(2) =41a(3) =1019a(4) =12305a(5) =-7478221a(6) =-3005647943

External references