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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =-2a(4) =10a(5) =-40a(6) =104a(7) =208a(8) =-6320a(9) =64640a(10) =-436096a(11) =986368a(12) =29459200a(13) =-652487680a(14) =8309679104a(15) =-60911593472a(16) =-294946887680