Expansion of e.g.f. arcsinh(x*exp(x)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =-8a(5) =-76a(6) =-264a(7) =1672a(8) =36800a(9) =261648a(10) =-1443680a(11) =-66164704a(12) =-792152448a(13) =2482671424a(14) =289529373056