Number of primitive (=aperiodic) 7-ary words with length less than or equal to n which are earlier in lexicographic order than any other word derived by cyclic shifts of the alphabet.
A320091
Number of primitive (=aperiodic) 7-ary words with length less than or equal to n which are earlier in lexicographic order than any other word derived by cyclic shifts of the alphabet.
Terms
- a(0) =1a(1) =7a(2) =55a(3) =391a(4) =2791a(5) =19543a(6) =137191a(7) =960391a(8) =6725143a(9) =47076343a(10) =329551591a(11) =2306861191a(12) =16148148391a(13) =113037041143a(14) =791260111543
External references
- oeis: A320091