sec(arctanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+115/4!*x^4-500/5!*x^5...

A013165

sec(arctanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+115/4!*x^4-500/5!*x^5...

Terms

    a(0) =1a(1) =0a(2) =4a(3) =-6a(4) =115a(5) =-500a(6) =8830a(7) =-70770a(8) =1316825a(9) =-15886440a(10) =324218600a(11) =-5249917750a(12) =119185529675

External references