a(n) = ceiling(A013984(n)/2).

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =3a(7) =4a(8) =6a(9) =10a(10) =16a(11) =25a(12) =40a(13) =63a(14) =100a(15) =159a(16) =253a(17) =402a(18) =640a(19) =1017a(20) =1617a(21) =2570a(22) =4087a(23) =6498a(24) =10331a(25) =16427a(26) =26118a(27) =41528a(28) =66030a(29) =104988