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.

1, 7, 49, 280, 1414, 6104, 23527, 83916, 296268, 1050777, 3771418, 13717679, 50861266, 191950441, 739460834, 2901202157, 11612278801, 47307362988, 196385040929, 828929230122, 3560359729835, 15531007871015, 68843517673532, 309567264833019, 1412620935530761

Offset: 0

Author

Alois P. Heinz, Jun 08 2012

Keywords

• nonn

Crossrefs

Column k=7 of A213276.