arcsin(tanh(x)*cos(x))=x-4/3!*x^3+576/7!*x^7+8960/9!*x^9...

A012688

arcsin(tanh(x)*cos(x))=x-4/3!*x^3+576/7!*x^7+8960/9!*x^9...

Terms

    a(0) =1a(1) =-4a(2) =0a(3) =576a(4) =8960a(5) =-2566144a(6) =-79073280a(7) =51695271936

External references