Expansion of e.g.f. sinh(log(1+log(1+x))).

Terms

a(0) =0a(1) =1a(2) =-2a(3) =8a(4) =-47a(5) =359a(6) =-3349a(7) =36756a(8) =-462972a(9) =6574704a(10) =-103861896a(11) =1805930928a(12) =-34267701720a(13) =704555489832