Expansion of log(1+sin(sinh(x))).

Terms

a(0) =0a(1) =1a(2) =-1a(3) =2a(4) =-6a(5) =16a(6) =-72a(7) =328a(8) =-1904a(9) =12160a(10) =-89344a(11) =721280a(12) =-6445824a(13) =62638720a(14) =-660602880a(15) =7495723264a(16) =-91175548928