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.

A339016 A classification of permutations based on their cycle length and the size of the centralizer of their cycle type. Triangle read by rows, T(n, k) for 0 <= k <= n.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 0
5 2
6 0
7 0
8 0
9 6
10 0
11 0
12 0
13 3
14 21
15 0
16 0
17 0
18 0
19 35
20 85
21 0
22 0
23 0
24 0
25 55
26 255
27 410
28 0
29 0
30 0
31 0
32 0
33 1015
34 1659
35 2366
36 0
37 0
38 0
39 0
40 0
41 2485
42 10528
43 11242
44 16065
45 0
46 0
47 0
48 0
49 0
50 2240
51 58149
52 92064
53 84762
54 125665
55 0
56 0
57 0
58 0
59 0
60 0
61 228221
62 760725
63 805530
64 722250
65 1112074

List of values

[1, 0, 1, 0, 0, 2, 0, 0, 0, 6, 0, 0, 0, 3, 21, 0, 0, 0, 0, 35, 85, 0, 0, 0, 0, 55, 255, 410, 0, 0, 0, 0, 0, 1015, 1659, 2366, 0, 0, 0, 0, 0, 2485, 10528, 11242, 16065, 0, 0, 0, 0, 0, 2240, 58149, 92064, 84762, 125665, 0, 0, 0, 0, 0, 0, 228221, 760725, 805530, 722250, 1112074]