Number of words w of length n over an n-ary alphabet such that 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.
A321704
Number of words w of length n over an n-ary alphabet such that 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) =1a(1) =1a(2) =4a(3) =18a(4) =118a(5) =895a(6) =8151a(7) =83916a(8) =977026a(9) =12602451a(10) =178880725a(11) =2766415036a(12) =46314488705a(13) =834067614601
External references
- oeis: A321704