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A213866 Number of words w where each letter of the n-ary alphabet occurs 6 times 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
1, 1, 174, 188196, 586368681, 3745777177366, 40684710729862072, 668821362774214965294, 15388200323143520006870562, 468682891926540940991787213006, 18131599140232990157442722880124741, 863168115684925396146477660939182979547 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..11.

EXAMPLE

a(0) = 1: the empty word.

a(1) = 1: aaaaaa.

a(2) = 174: aaaaaabbbbbb, aaaaababbbbb, ..., baabababaabb, baababababab.

CROSSREFS

Row n=6 of A213275.

Sequence in context: A053173 A185525 A224433 * A252717 A187425 A186218

Adjacent sequences:  A213863 A213864 A213865 * A213867 A213868 A213869

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Jun 23 2012

STATUS

approved

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Last modified August 16 05:55 EDT 2022. Contains 356160 sequences. (Running on oeis4.)