Expansion of sin(log(1+x))/cos(x).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =4a(4) =-6a(5) =25a(6) =15a(7) =-338a(8) =6972a(9) =-70891a(10) =859275a(11) =-9640864a(12) =120888174a(13) =-1541505979a(14) =21347932515a(15) =-308351466590