Transform of the finite sequence (1, 0, -1) by the T_{0,1} transformation (see link).

Terms

a(0) =2a(1) =3a(2) =6a(3) =16a(4) =38a(5) =88a(6) =204a(7) =474a(8) =1102a(9) =2562a(10) =5956a(11) =13846a(12) =32188a(13) =74828a(14) =173954a(15) =404394a(16) =940102a(17) =2185472a(18) =5080606a(19) =11810976a(20) =27457188a(21) =63830218a(22) =148387254a(23) =344958514a(24) =801931252a(25) =1864263982a(26) =4333887956a(27) =10075067156a(28) =23421689538a(29) =54448822258