exp(arcsinh(arctan(x)))=1+x+1/2!*x^2-2/3!*x^3-11/4!*x^4+24/5!*x^5...

A012251

exp(arcsinh(arctan(x)))=1+x+1/2!*x^2-2/3!*x^3-11/4!*x^4+24/5!*x^5...

Terms

    a(0) =1a(1) =1a(2) =1a(3) =-2a(4) =-11a(5) =24a(6) =349a(7) =-720a(8) =-22455a(9) =40320a(10) =2465241a(11) =-3628800a(12) =-416217603a(13) =479001600a(14) =100729124469a(15) =-87178291200

External references