arcsin(arcsin(tanh(x)))=x+4/5!*x^5+24/7!*x^7+1744/9!*x^9+61504/11!*x^11...

A012124

arcsin(arcsin(tanh(x)))=x+4/5!*x^5+24/7!*x^7+1744/9!*x^9+61504/11!*x^11...

Terms

    a(0) =1a(1) =0a(2) =4a(3) =24a(4) =1744a(5) =61504a(6) =6700992a(7) =632723584a(8) =106726576384

External references