cosh(sinh(x)+tan(x))=1+4/2!*x^2+40/4!*x^4+838/6!*x^6+30552/8!*x^8...

A013053

cosh(sinh(x)+tan(x))=1+4/2!*x^2+40/4!*x^4+838/6!*x^6+30552/8!*x^8...

Terms

    a(0) =1a(1) =4a(2) =40a(3) =838a(4) =30552a(5) =1707386a(6) =135377180a(7) =14418478134

External references