E.g.f.: exp(x-(1-x^3)^(1/3)+1).

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =9a(5) =21a(6) =161a(7) =911a(8) =3473a(9) =48329a(10) =406241a(11) =2150171a(12) =44216921a(13) =491897693a(14) =3327845249a(15) =90934644711