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

Terms

a(0) =0a(1) =2a(2) =-1a(3) =-8a(4) =18a(5) =50a(6) =15a(7) =-4580a(8) =19180a(9) =126890a(10) =-76725a(11) =-26697200a(12) =158352150a(13) =2084909450a(14) =-4854010525a(15) =-695709345500