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

Terms

a(0) =1a(1) =0a(2) =1a(3) =-9a(4) =60a(5) =-390a(6) =2820a(7) =-24010a(8) =238336a(9) =-2659104a(10) =32417160a(11) =-426027008a(12) =6004088112a(13) =-90491148176