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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =3a(4) =-14a(5) =71a(6) =-466a(7) =3553a(8) =-30904a(9) =303821a(10) =-3318856a(11) =39897503a(12) =-523448144a(13) =7440769571a(14) =-113918718096