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

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =24a(5) =56a(6) =132a(7) =312a(8) =736a(9) =1736a(10) =4096a(11) =9664a(12) =22800a(13) =53792a(14) =126912a(15) =299424a(16) =706432a(17) =1666688a(18) =3932224a(19) =9277312a(20) =21888000a(21) =51640448a(22) =121835520a(23) =287447040a(24) =678174976a(25) =1600020992a(26) =3774936064a(27) =8906222080a(28) =21012486144a(29) =49574844416