arctan(arctanh(x)+log(x+1))=2*x-1/2!*x^2-12/3!*x^3+42/4!*x^4+436/5!*x^5...

A013159

arctan(arctanh(x)+log(x+1))=2*x-1/2!*x^2-12/3!*x^3+42/4!*x^4+436/5!*x^5...

Terms

    a(0) =0a(1) =2a(2) =-1a(3) =-12a(4) =42a(5) =436a(6) =-4170a(7) =-32704a(8) =751016a(9) =3283072a(10) =-209162880a(11) =86913024a(12) =81648502848a(13) =-575015877024

External references