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

Terms

a(0) =0a(1) =1a(2) =-1a(3) =5a(4) =-12a(5) =49a(6) =-225a(7) =1133a(8) =-8176a(9) =61665a(10) =-567225a(11) =5701365a(12) =-62634924a(13) =755601105a(14) =-9768453513a(15) =136547354973