cos(arcsin(arctanh(x)))=1-1/2!*x^2-11/4!*x^4-349/6!*x^6-22455/8!*x^8...

A012138

cos(arcsin(arctanh(x)))=1-1/2!*x^2-11/4!*x^4-349/6!*x^6-22455/8!*x^8...

Terms

    a(0) =1a(1) =-1a(2) =-11a(3) =-349a(4) =-22455a(5) =-2465241a(6) =-416217603a(7) =-100729124469

External references