A293889 - cp's OEIS frontend

A293889 Number of sets of nonempty words with a total of n letters over octonary alphabet containing the eighth 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)
8	1
9	9
10	81
11	554
12	3723
13	22795
14	138112
15	804518
16	4666521
17	26601027
18	151607448
19	858078020
20	4867646261
21	27569926921
22	156731332711
23	892188573587
24	5101471557918
25	29254697416411
26	168575093334130
27	975019430127356
28	5667406033511452
29	33079212453456235
30	194029375272192986

[1, 9, 81, 554, 3723, 22795, 138112, 804518, 4666521, 26601027, 151607448, 858078020, 4867646261, 27569926921, 156731332711, 892188573587, 5101471557918, 29254697416411, 168575093334130, 975019430127356, 5667406033511452, 33079212453456235, 194029375272192986]

cp's OEIS Frontend

A293889 Number of sets of nonempty words with a total of n letters over octonary alphabet containing the eighth 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