Largest odd divisors of Fibonacci numbers.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =5a(5) =1a(6) =13a(7) =21a(8) =17a(9) =55a(10) =89a(11) =9a(12) =233a(13) =377a(14) =305a(15) =987a(16) =1597a(17) =323a(18) =4181a(19) =6765a(20) =5473a(21) =17711a(22) =28657a(23) =1449a(24) =75025a(25) =121393a(26) =98209a(27) =317811a(28) =514229a(29) =104005