Expansion of e.g.f. exp(4*(exp(x) - 1) - 3*x).

Terms

a(0) =1a(1) =1a(2) =5a(3) =17a(4) =93a(5) =505a(6) =3269a(7) =22657a(8) =172461a(9) =1407177a(10) =12284629a(11) =113832273a(12) =1114775869a(13) =11487315481a(14) =124118143717