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A293802 Number of multisets of nonempty words with a total of n letters over septenary alphabet containing the seventh 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, 8, 65, 402, 2457, 13715, 75997, 405672, 2160487, 11323773, 59410323, 309820614, 1620398321, 8465984310, 44406170067, 233282360743, 1230967142377, 6514406116198, 34634583683433, 184803113451639, 990647642903411, 5331286355111395, 28821503947539335 (list; graph; refs; listen; history; text; internal format)
OFFSET

7,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 7..1000

FORMULA

a(n) = A293737(n) - A293736(n).

CROSSREFS

Column k=7 of A293109.

Cf. A293736, A293737.

Sequence in context: A009373 A305589 A317007 * A316872 A317600 A288788

Adjacent sequences:  A293799 A293800 A293801 * A293803 A293804 A293805

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Oct 16 2017

STATUS

approved

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Last modified June 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)