tan(tan(arcsinh(x)))=x+3/3!*x^3+41/5!*x^5+1187/7!*x^7+62129/9!*x^9...

A012162

tan(tan(arcsinh(x)))=x+3/3!*x^3+41/5!*x^5+1187/7!*x^7+62129/9!*x^9...

Terms

    a(0) =1a(1) =3a(2) =41a(3) =1187a(4) =62129a(5) =4782467a(6) =547167193a(7) =80119022947

External references