Expansion of g.f. (1-4*x^2+2*x^3)/((1-x)*(1-2*x-2*x^2+2*x^3)).

Terms

a(0) =1a(1) =3a(2) =5a(3) =13a(4) =29a(5) =73a(6) =177a(7) =441a(8) =1089a(9) =2705a(10) =6705a(11) =16641a(12) =41281a(13) =102433a(14) =254145a(15) =630593a(16) =1564609a(17) =3882113a(18) =9632257a(19) =23899521a(20) =59299329a(21) =147133185a(22) =365065985a(23) =905799681a(24) =2247464961a(25) =5576397313a(26) =13836125185a(27) =34330115073a(28) =85179685889