Expansion of e.g.f. exp(x/(1-x-x^4)).

Terms

a(0) =1a(1) =1a(2) =3a(3) =13a(4) =73a(5) =621a(6) =6211a(7) =70393a(8) =884913a(9) =12534553a(10) =197772931a(11) =3429365061a(12) =64519103353