Fibonacci sequence beginning 5, 13.

Terms

a(0) =5a(1) =13a(2) =18a(3) =31a(4) =49a(5) =80a(6) =129a(7) =209a(8) =338a(9) =547a(10) =885a(11) =1432a(12) =2317a(13) =3749a(14) =6066a(15) =9815a(16) =15881a(17) =25696a(18) =41577a(19) =67273a(20) =108850a(21) =176123a(22) =284973a(23) =461096a(24) =746069a(25) =1207165a(26) =1953234a(27) =3160399a(28) =5113633a(29) =8274032