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

0,2

Links

Table of n, a(n) for n=0..24.

Crossrefs

Column k=7 of A213276.

Sequence in context: A293887 A224131 A218266 * A189258 A188748 A188986

Adjacent sequences: A213292 A213293 A213294 * A213296 A213297 A213298

Keyword

nonn

Author

Alois P. Heinz, Jun 08 2012

Status

approved