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A293801
Number of multisets of nonempty words with a total of n letters over senary alphabet containing the sixth letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
2
1, 7, 50, 275, 1500, 7517, 37481, 180552, 868974, 4120598, 19574576, 92438492, 437977946, 2072100450, 9843499790, 46801485700, 223513049582, 1069698339831, 5142776951972, 24793644707917, 120072824665722, 583316549714731, 2846266161931683, 13933753316683787
OFFSET
6,2
LINKS
FORMULA
a(n) = A293736(n) - A293735(n).
CROSSREFS
Column k=6 of A293109.
Sequence in context: A271623 A153693 A293475 * A227676 A278875 A266360
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 16 2017
STATUS
approved