a(n) = Fibonacci(n) + 1.

Terms

a(0) =1a(1) =2a(2) =2a(3) =3a(4) =4a(5) =6a(6) =9a(7) =14a(8) =22a(9) =35a(10) =56a(11) =90a(12) =145a(13) =234a(14) =378a(15) =611a(16) =988a(17) =1598a(18) =2585a(19) =4182a(20) =6766a(21) =10947a(22) =17712a(23) =28658a(24) =46369a(25) =75026a(26) =121394a(27) =196419a(28) =317812a(29) =514230