Number of words w of length n such that each letter of the octonary alphabet is used at least once and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.
A321844
Number of words w of length n such that each letter of the octonary alphabet is used at least once and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.
Terms
- a(0) =40320a(1) =181440a(2) =1058400a(3) =4823280a(4) =23296680a(5) =103757940a(6) =478790130a(7) =2149170345a(8) =9894491985a(9) =45282147720a(10) =211500002835a(11) =991730832582
External references
- oeis: A321844