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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =3a(4) =-10a(5) =45a(6) =-256a(7) =1743a(8) =-13840a(9) =125625a(10) =-1282816a(11) =14554683a(12) =-181649920a(13) =2473184805a(14) =-36478744576a(15) =579439207623