A 9th-order Fibonacci sequence.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =9a(10) =17a(11) =33a(12) =65a(13) =129a(14) =257a(15) =513a(16) =1025a(17) =2049a(18) =4097a(19) =8185a(20) =16353a(21) =32673a(22) =65281a(23) =130433a(24) =260609a(25) =520705a(26) =1040385a(27) =2078721a(28) =4153345a(29) =8298505