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

Terms

a(0) =1a(1) =1a(2) =3a(3) =3a(4) =7a(5) =13a(6) =13a(7) =29a(8) =55a(9) =55a(10) =127a(11) =217a(12) =249a(13) =505a(14) =891a(15) =1019a(16) =2047a(17) =3645a(18) =6749a(19) =6781a(20) =15087a(21) =28655a(22) =28671a(23) =65521a(24) =111921a(25) =130865a(26) =262003a(27) =458611a(28) =514551a(29) =1047229