A213294 Number of n-length words w over 6-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, 6, 36, 171, 711, 2506, 8151, 25781, 83728, 273248, 916966, 3121506, 10934875, 38945256, 142403783, 529393936, 2014819829, 7790840332, 30758499541, 123255094820, 503078455794, 2081817569353, 8756613613322, 37300624224737, 161213532001916, 704851308055768

Offset

0,2

Links

Table of n, a(n) for n=0..25.

Crossrefs

Column k=6 of A213276.

Sequence in context: A351783 A190065 A293068 * A293886 A132165 A200573

Adjacent sequences: A213291 A213292 A213293 * A213295 A213296 A213297

Keyword

nonn

Author

Alois P. Heinz, Jun 08 2012

Status

approved