Number of n-length words w over 7-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.
A213295
Number of n-length words w over 7-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) =7a(2) =49a(3) =280a(4) =1414a(5) =6104a(6) =23527a(7) =83916a(8) =296268a(9) =1050777a(10) =3771418a(11) =13717679a(12) =50861266a(13) =191950441a(14) =739460834a(15) =2901202157a(16) =11612278801a(17) =47307362988a(18) =196385040929a(19) =828929230122
External references
- oeis: A213295