Expansion of e.g.f.: sin(tanh(x))*exp(x).

Terms

a(0) =0a(1) =1a(2) =2a(3) =0a(4) =-8a(5) =12a(6) =168a(7) =-280a(8) =-5760a(9) =11536a(10) =310304a(11) =-703296a(12) =-23894144a(13) =59653440a(14) =2481859968a(15) =-6715007104a(16) =-333725331456a(17) =967972497664