E.g.f.: exp(x/(x^2 - 1)).

Terms

a(0) =1a(1) =-1a(2) =1a(3) =-7a(4) =25a(5) =-181a(6) =1201a(7) =-10291a(8) =97777a(9) =-1013545a(10) =12202561a(11) =-151573951a(12) =2173233481a(13) =-31758579997a(14) =524057015665