List of prefix-normal words over the alphabet {1,2}.

Terms

a(0) =1a(1) =2a(2) =11a(3) =12a(4) =22a(5) =111a(6) =112a(7) =121a(8) =122a(9) =222a(10) =1111a(11) =1112a(12) =1121a(13) =1122a(14) =1212a(15) =1221a(16) =1222a(17) =2222a(18) =11111a(19) =11112a(20) =11121a(21) =11122a(22) =11211a(23) =11212a(24) =11221a(25) =11222a(26) =12121a(27) =12122a(28) =12212a(29) =12221