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

Terms

a(0) =0a(1) =1a(2) =-2a(3) =7a(4) =-28a(5) =141a(6) =-846a(7) =5923a(8) =-47384a(9) =426457a(10) =-4264570a(11) =46910271a(12) =-562923252a(13) =7318002277a(14) =-102452031878