Expansion of e.g.f.: tanh(x)*cos(log(1+x)).

Terms

a(0) =0a(1) =1a(2) =0a(3) =-5a(4) =12a(5) =-14a(6) =120a(7) =-1238a(8) =6608a(9) =-30092a(10) =279360a(11) =-3130852a(12) =26571600a(13) =-212970328a(14) =2311816416a(15) =-27582585592a(16) =262039232640