cos(sin(arctanh(x)))=1-1/2!*x^2-3/4!*x^4-21/6!*x^6+185/8!*x^8...
A012055
cos(sin(arctanh(x)))=1-1/2!*x^2-3/4!*x^4-21/6!*x^6+185/8!*x^8...
Terms
- a(0) =1a(1) =-1a(2) =-3a(3) =-21a(4) =185a(5) =67159a(6) =11805621a(7) =2380474563a(8) =591392066161
External references
- oeis: A012055