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.

A293815 Number T(n,k) of sets of exactly k nonempty words with a total of n letters over n-ary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter; triangle T(n,k), n>=0, read by rows.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 2
5 0
6 4
7 2
8 0
9 10
10 5
11 0
12 26
13 18
14 1
15 0
16 76
17 52
18 8
19 0
20 232
21 168
22 30
23 0
24 764
25 533
26 114
27 4
28 0
29 2620
30 1792
31 411
32 22
33 0
34 9496
35 6161
36 1462
37 116
38 0
39 35696
40 22088
41 5237
42 482
43 6
44 0
45 140152
46 81690
47 18998
48 1966
49 48
50 0
51 568504
52 313224
53 70220
54 7682
55 274

List of values

[1, 0, 1, 0, 2, 0, 4, 2, 0, 10, 5, 0, 26, 18, 1, 0, 76, 52, 8, 0, 232, 168, 30, 0, 764, 533, 114, 4, 0, 2620, 1792, 411, 22, 0, 9496, 6161, 1462, 116, 0, 35696, 22088, 5237, 482, 6, 0, 140152, 81690, 18998, 1966, 48, 0, 568504, 313224, 70220, 7682, 274]