Expansion of e.g.f.: exp(log(1+x)*cosh(x)).

Terms

a(0) =1a(1) =1a(2) =0a(3) =3a(4) =6a(5) =-5a(6) =135a(7) =-154a(8) =1260a(9) =6189a(10) =-33285a(11) =470294a(12) =-2056758a(13) =14299935a(14) =-3614611a(15) =-379101878a(16) =10041282472a(17) =-121491285111