arctanh(sinh(x)+tan(x))=2*x+19/3!*x^3+1025/5!*x^5+138129/7!*x^7...

A013052

arctanh(sinh(x)+tan(x))=2*x+19/3!*x^3+1025/5!*x^5+138129/7!*x^7...

Terms

    a(0) =2a(1) =19a(2) =1025a(3) =138129a(4) =34734545a(5) =14037224089

External references