Expansion of e.g.f. exp(arctan(x) - log(x+1)).

Terms

a(0) =1a(1) =0a(2) =1a(3) =-4a(4) =9a(5) =-40a(6) =385a(7) =-2700a(8) =15505a(9) =-145360a(10) =1886625a(11) =-19796500a(12) =190881625a(13) =-2654379000a(14) =44269902625a(15) =-625468889500