Fibonacci sequence beginning 1, 18.

Terms

a(0) =1a(1) =18a(2) =19a(3) =37a(4) =56a(5) =93a(6) =149a(7) =242a(8) =391a(9) =633a(10) =1024a(11) =1657a(12) =2681a(13) =4338a(14) =7019a(15) =11357a(16) =18376a(17) =29733a(18) =48109a(19) =77842a(20) =125951a(21) =203793a(22) =329744a(23) =533537a(24) =863281a(25) =1396818a(26) =2260099a(27) =3656917a(28) =5917016a(29) =9573933