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A293111
Number of multisets of nonempty words with a total of 2n letters over n-ary alphabet containing the n-th letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.
3
1, 2, 10, 58, 439, 3767, 37481, 405672, 4816390, 60748286, 817467196, 11533898929, 170979909037, 2635984019533, 42297026556483, 701880878089205, 12045976560853148, 212911592290588547, 3874514946593004395, 72378921228197309169, 1387364840045160600103
OFFSET
0,2
LINKS
FORMULA
a(n) = A293109(2n,n).
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Sep 30 2017
STATUS
approved