E.g.f.: sinh(sqrt(2)*x)/(sqrt(2)*(1-x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =8a(4) =32a(5) =164a(6) =984a(7) =6896a(8) =55168a(9) =496528a(10) =4965280a(11) =54618112a(12) =655417344a(13) =8520425536a(14) =119285957504