Number of circular binary sequences of length n with an odd number of 0's and no consecutive 1's.

Terms

a(0) =1a(1) =2a(2) =1a(3) =4a(4) =6a(5) =8a(6) =15a(7) =24a(8) =37a(9) =62a(10) =100a(11) =160a(12) =261a(13) =422a(14) =681a(15) =1104a(16) =1786a(17) =2888a(18) =4675a(19) =7564a(20) =12237a(21) =19802a(22) =32040a(23) =51840a(24) =83881a(25) =135722a(26) =219601a(27) =355324a(28) =574926a(29) =930248