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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =6a(4) =-18a(5) =135a(6) =-795a(7) =7266a(8) =-62188a(9) =669309a(10) =-7267005a(11) =90797894a(12) =-1179693966a(13) =16915574299a(14) =-254880171455