login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A293890 Number of sets of nonempty words with a total of n letters over nonary alphabet containing the ninth 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, 10, 100, 752, 5541, 36977, 243498, 1535725, 9622087, 59096165, 362231798, 2201156531, 13388589925, 81219563343, 494086167465, 3007727300865, 18380979656356, 112620528644918, 693158020152524, 4281848080792280, 26578705462004141, 165681105341062256 (list; graph; refs; listen; history; text; internal format)
OFFSET

9,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 9..1000

FORMULA

a(n) = A293748(n) - A293747(n).

CROSSREFS

Column k=9 of A293113.

Cf. A293747, A293748.

Sequence in context: A224263 A223920 A223865 * A218269 A224348 A213298

Adjacent sequences:  A293887 A293888 A293889 * A293891 A293892 A293893

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Oct 18 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 19 04:56 EST 2022. Contains 350464 sequences. (Running on oeis4.)