Revert transform of (1 - x - 2x^2 + x^3)/(1 - 2x^2 - 2x^3).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =74a(7) =219a(8) =678a(9) =2160a(10) =7062a(11) =23538a(12) =79734a(13) =273600a(14) =948972a(15) =3320845a(16) =11708586a(17) =41546434a(18) =148236556a(19) =531446460a(20) =1913357426a(21) =6914471176a(22) =25071324984a(23) =91181690872a(24) =332528253078