Largest prime immediately preceding a Fibonacci number.

Terms

a(0) =2a(1) =3a(2) =7a(3) =11a(4) =19a(5) =31a(6) =53a(7) =83a(8) =139a(9) =229a(10) =373a(11) =607a(12) =983a(13) =1583a(14) =2579a(15) =4177a(16) =6763a(17) =10939a(18) =17707a(19) =28649a(20) =46351a(21) =75017a(22) =121379a(23) =196387a(24) =317797a(25) =514219a(26) =832003a(27) =1346249a(28) =2178283a(29) =3524569