Fibonacci sequence beginning 4, 13.

Terms

a(0) =4a(1) =13a(2) =17a(3) =30a(4) =47a(5) =77a(6) =124a(7) =201a(8) =325a(9) =526a(10) =851a(11) =1377a(12) =2228a(13) =3605a(14) =5833a(15) =9438a(16) =15271a(17) =24709a(18) =39980a(19) =64689a(20) =104669a(21) =169358a(22) =274027a(23) =443385a(24) =717412a(25) =1160797a(26) =1878209a(27) =3039006a(28) =4917215a(29) =7956221