arctanh(tan(x)*exp(x))=x+2/2!*x^2+7/3!*x^3+36/4!*x^4+285/5!*x^5...

A012363

arctanh(tan(x)*exp(x))=x+2/2!*x^2+7/3!*x^3+36/4!*x^4+285/5!*x^5...

Terms

    a(0) =0a(1) =1a(2) =2a(3) =7a(4) =36a(5) =285a(6) =2662a(7) =30147a(8) =395976a(9) =5968505a(10) =101054282a(11) =1901962687a(12) =39368308716a(13) =889051951125

External references