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

Terms

a(0) =0a(1) =1a(2) =0a(3) =1a(4) =-12a(5) =56a(6) =-240a(7) =1744a(8) =-16128a(9) =143296a(10) =-1353600a(11) =14972288a(12) =-183912960a(13) =2385640960a(14) =-33085817856a(15) =496732177408