Fibonacci sequence beginning 13, 7.

Terms

a(0) =13a(1) =7a(2) =20a(3) =27a(4) =47a(5) =74a(6) =121a(7) =195a(8) =316a(9) =511a(10) =827a(11) =1338a(12) =2165a(13) =3503a(14) =5668a(15) =9171a(16) =14839a(17) =24010a(18) =38849a(19) =62859a(20) =101708a(21) =164567a(22) =266275a(23) =430842a(24) =697117a(25) =1127959a(26) =1825076a(27) =2953035a(28) =4778111a(29) =7731146