The bisection A053445(2n+1).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =3a(6) =7a(7) =11a(8) =17a(9) =28a(10) =43a(11) =63a(12) =96a(13) =139a(14) =199a(15) =287a(16) =406a(17) =566a(18) =792a(19) =1092a(20) =1496a(21) =2045a(22) =2772a(23) =3733a(24) =5016a(25) =6696a(26) =8897a(27) =11784a(28) =15534a(29) =20391