A293747 - cp's OEIS frontend

A293747 Number of sets of nonempty words with a total of n letters over octonary 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	4844
10	17224
11	63397
12	241968
13	953213
14	3879822
15	16250333
16	70050877
17	309714232
18	1404000641
19	6506809837
20	30813282963
21	148741986670
22	731495853897
23	3657808596354
24	18588011870288
25	95841754173073
26	501169433939670
27	2654344778727646

[1, 1, 2, 6, 15, 45, 136, 430, 1415, 4844, 17224, 63397, 241968, 953213, 3879822, 16250333, 70050877, 309714232, 1404000641, 6506809837, 30813282963, 148741986670, 731495853897, 3657808596354, 18588011870288, 95841754173073, 501169433939670, 2654344778727646]

cp's OEIS Frontend

A293747 Number of sets of nonempty words with a total of n letters over octonary 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