Expansion of e.g.f.: cosh(arctan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+19/4!*x^4-140/5!*x^5...

A012969

Expansion of e.g.f.: cosh(arctan(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+19/4!*x^4-140/5!*x^5...

Terms

    a(0) =1a(1) =0a(2) =4a(3) =-6a(4) =19a(5) =-140a(6) =910a(7) =-5250a(8) =39925a(9) =-414360a(10) =4244200a(11) =-42242750a(12) =500292775a(13) =-7036001700a(14) =98944220050

External references