Expansion of 1/(1-3*x-2*x^2-2*x^3).

Terms

a(0) =1a(1) =3a(2) =11a(3) =41a(4) =151a(5) =557a(6) =2055a(7) =7581a(8) =27967a(9) =103173a(10) =380615a(11) =1404125a(12) =5179951a(13) =19109333a(14) =70496151a(15) =260067021a(16) =959412031a(17) =3539362437a(18) =13057045415a(19) =48168685181a(20) =177698871247a(21) =655548074933