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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-24a(5) =134a(6) =-870a(7) =6474a(8) =-54432a(9) =510768a(10) =-5294160a(11) =60090480a(12) =-741407040a(13) =9881421120a(14) =-141493322880