tanh(tan(x)+arcsin(x))=2*x-13/3!*x^3+297/5!*x^5-14159/7!*x^7...

A012955

tanh(tan(x)+arcsin(x))=2*x-13/3!*x^3+297/5!*x^5-14159/7!*x^7...

Terms

    a(0) =2a(1) =-13a(2) =297a(3) =-14159a(4) =1160001a(5) =-145101559a(6) =25744031185

External references