Number of primitive (=aperiodic) 9-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.
A320093
Number of primitive (=aperiodic) 9-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) =9a(2) =89a(3) =809a(4) =7369a(5) =66329a(6) =597769a(7) =5380009a(8) =48426649a(9) =435840569a(10) =3922624969a(11) =35303624809a(12) =317733161289
External references
- oeis: A320093