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A321842 Number of words w of length n such that each letter of the senary alphabet is used at least once and 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
720, 2520, 11760, 43848, 176490, 665115, 2630715, 10224492, 41126477, 165441810, 683213215, 2840595291, 12061223560, 51668953199, 225204435800, 990537353423, 4420156777761, 19894290092220, 90640449133488, 416216322774452, 1931286827029792, 9024993532633957 (list; graph; refs; listen; history; text; internal format)
OFFSET
6,1
LINKS
CROSSREFS
Column k=6 of A257783.
Sequence in context: A253734 A112530 A052800 * A052794 A226885 A096933
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Nov 19 2018
STATUS
approved

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Last modified July 17 20:28 EDT 2024. Contains 374377 sequences. (Running on oeis4.)