A293890 - cp's OEIS frontend

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.

n	a(n)
9	1
10	10
11	100
12	752
13	5541
14	36977
15	243498
16	1535725
17	9622087
18	59096165
19	362231798
20	2201156531
21	13388589925
22	81219563343
23	494086167465
24	3007727300865
25	18380979656356
26	112620528644918
27	693158020152524
28	4281848080792280
29	26578705462004141
30	165681105341062256

[1, 10, 100, 752, 5541, 36977, 243498, 1535725, 9622087, 59096165, 362231798, 2201156531, 13388589925, 81219563343, 494086167465, 3007727300865, 18380979656356, 112620528644918, 693158020152524, 4281848080792280, 26578705462004141, 165681105341062256]

cp's OEIS Frontend

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.

Table of values

List of values