Maximum size of a class of binary words of length n having the same prefix normal form.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =10a(8) =12a(9) =18a(10) =24a(11) =30a(12) =40a(13) =60a(14) =80a(15) =111a(16) =165a(17) =246a(18) =369a(19) =596a(20) =894a(21) =1406a(22) =2109a(23) =3462a(24) =5193a(25) =8528a(26) =12792a(27) =21390a(28) =32085a(29) =53206