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

Terms

a(0) =0a(1) =1a(2) =-2a(3) =4a(4) =-17a(5) =93a(6) =-649a(7) =5381a(8) =-51778a(9) =565957a(10) =-6930141a(11) =93992413a(12) =-1399244076a(13) =22689478823a(14) =-398164266655