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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =3a(4) =-10a(5) =41a(6) =-232a(7) =1467a(8) =-11408a(9) =100625a(10) =-1000704a(11) =11103155a(12) =-135118080a(13) =1795927225a(14) =-25845415936a(15) =400540116971