cosh(arctanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+51/4!*x^4-180/5!*x^5...

A013164

cosh(arctanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+51/4!*x^4-180/5!*x^5...

Terms

    a(0) =1a(1) =0a(2) =4a(3) =-6a(4) =51a(5) =-180a(6) =1710a(7) =-9450a(8) =105525a(9) =-793800a(10) =10319400a(11) =-98232750a(12) =1463667975a(13) =-16856739900a(14) =283755121650

External references