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

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =8a(5) =72a(6) =272a(7) =128a(8) =1024a(9) =51264a(10) =275072a(11) =-1287680a(12) =-7871488a(13) =206883328a(14) =1471104000a(15) =-19670491136a(16) =-159374082048