Number of overpal-free binary words of length n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =14a(6) =20a(7) =28a(8) =36a(9) =44a(10) =56a(11) =72a(12) =92a(13) =116a(14) =148a(15) =188a(16) =240a(17) =304a(18) =388a(19) =492a(20) =628a(21) =796a(22) =1016a(23) =1288a(24) =1644a(25) =2084a(26) =2660a(27) =3372a(28) =4304a(29) =5456