sinh(sec(x)*arctanh(x))=x+6/3!*x^3+120/5!*x^5+5376/7!*x^7...

A012846

sinh(sec(x)*arctanh(x))=x+6/3!*x^3+120/5!*x^5+5376/7!*x^7...

Terms

    a(0) =1a(1) =6a(2) =120a(3) =5376a(4) =415104a(5) =48143744a(6) =7784817664

External references