tan(tanh(x)+tan(x))=2*x+16/3!*x^3+544/5!*x^5+40192/7!*x^7...

A013136

tan(tanh(x)+tan(x))=2*x+16/3!*x^3+544/5!*x^5+40192/7!*x^7...

Terms

    a(0) =2a(1) =16a(2) =544a(3) =40192a(4) =5111296a(5) =994586624a(6) =274584084480

External references