Fibonacci sequence beginning 13, 9.

Terms

a(0) =13a(1) =9a(2) =22a(3) =31a(4) =53a(5) =84a(6) =137a(7) =221a(8) =358a(9) =579a(10) =937a(11) =1516a(12) =2453a(13) =3969a(14) =6422a(15) =10391a(16) =16813a(17) =27204a(18) =44017a(19) =71221a(20) =115238a(21) =186459a(22) =301697a(23) =488156a(24) =789853a(25) =1278009a(26) =2067862a(27) =3345871a(28) =5413733a(29) =8759604