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.

A346085 Number T(n,k) of permutations of [n] such that k is the GCD of the cycle lengths; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 4
8 0
9 2
10 0
11 15
12 3
13 0
14 6
15 0
16 96
17 0
18 0
19 0
20 24
21 0
22 455
23 105
24 40
25 0
26 0
27 120
28 0
29 4320
30 0
31 0
32 0
33 0
34 0
35 720
36 0
37 29295
38 4725
39 0
40 1260
41 0
42 0
43 0
44 5040
45 0
46 300160
47 0
48 22400
49 0
50 0
51 0
52 0
53 0
54 40320
55 0
56 2663199
57 530145
58 0
59 0
60 72576
61 0
62 0
63 0
64 0
65 362880

List of values

[1, 0, 1, 0, 1, 1, 0, 4, 0, 2, 0, 15, 3, 0, 6, 0, 96, 0, 0, 0, 24, 0, 455, 105, 40, 0, 0, 120, 0, 4320, 0, 0, 0, 0, 0, 720, 0, 29295, 4725, 0, 1260, 0, 0, 0, 5040, 0, 300160, 0, 22400, 0, 0, 0, 0, 0, 40320, 0, 2663199, 530145, 0, 0, 72576, 0, 0, 0, 0, 362880]