A293749 - cp's OEIS frontend

A293749 Number of sets of nonempty words with a total of n letters over denary alphabet 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)
0	1
1	1
2	2
3	6
4	15
5	45
6	136
7	430
8	1415
9	4845
10	17235
11	63508
12	242841
13	959746
14	3924747
15	16551199
16	71994097
17	322098625
18	1481655067
19	6990945197
20	33812067833
21	167294687170
22	846131720816
23	4367249636291
24	22985935628080
25	123193976095986
26	671862417595209
27	3724122166971836

[1, 1, 2, 6, 15, 45, 136, 430, 1415, 4845, 17235, 63508, 242841, 959746, 3924747, 16551199, 71994097, 322098625, 1481655067, 6990945197, 33812067833, 167294687170, 846131720816, 4367249636291, 22985935628080, 123193976095986, 671862417595209, 3724122166971836]

cp's OEIS Frontend

A293749 Number of sets of nonempty words with a total of n letters over denary alphabet 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