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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =-2a(4) =4a(5) =0a(6) =-1a(7) =-16a(8) =64a(9) =-256a(10) =1319a(11) =-7680a(12) =49204a(13) =-346112a(14) =2653559a(15) =-22022144a(16) =196707424a(17) =-1881735168a(18) =19194804719a(19) =-207983607808