Expansion of e.g.f.: exp(tan(x).exp(x)).

Terms

a(0) =1a(1) =1a(2) =3a(3) =12a(4) =57a(5) =332a(6) =2209a(7) =16730a(8) =140609a(9) =1302664a(10) =13137441a(11) =143354574a(12) =1680017889a(13) =21043179068a(14) =280310970385