a(n) = floor(log(Fibonacci(prime(k))/prime(k))), where k = A119984(n).

Terms

a(0) =-1a(1) =0a(2) =0a(3) =2a(4) =2a(5) =4a(6) =7a(7) =9a(8) =16a(9) =17a(10) =34a(11) =57a(12) =60a(13) =166a(14) =200a(15) =201a(16) =209a(17) =237a(18) =266a(19) =267a(20) =1420a(21) =2263a(22) =2582a(23) =4470a(24) =4646a(25) =6933a(26) =12289a(27) =14789a(28) =17311a(29) =18039