cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A293737 Number of multisets of nonempty words with a total of n letters over septenary 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

n a(n)
0 1
1 1
2 3
3 7
4 20
5 54
6 164
7 500
8 1629
9 5462
10 19164
11 69457
12 261154
13 1012164
14 4045640
15 16611121
16 70001515
17 301922104
18 1331128134
19 5986321599
20 27426419974
21 127801386949
22 605016657100
23 2906093083727
24 14149469612919
25 69762426194708
26 348016146152252
27 1755188873640756

List of values

[1, 1, 3, 7, 20, 54, 164, 500, 1629, 5462, 19164, 69457, 261154, 1012164, 4045640, 16611121, 70001515, 301922104, 1331128134, 5986321599, 27426419974, 127801386949, 605016657100, 2906093083727, 14149469612919, 69762426194708, 348016146152252, 1755188873640756]