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.

A330858 Triangle read by rows: T(n,k) is the number of permutations in S_n for which all cycles have length <= k.

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 4
6 6
7 1
8 10
9 18
10 24
11 1
12 26
13 66
14 96
15 120
16 1
17 76
18 276
19 456
20 600
21 720
22 1
23 232
24 1212
25 2472
26 3480
27 4320
28 5040
29 1
30 764
31 5916
32 14736
33 22800
34 29520
35 35280
36 40320
37 1
38 2620
39 31068
40 92304
41 164880
42 225360
43 277200
44 322560
45 362880
46 1
47 9496
48 171576
49 632736

List of values

[1, 1, 2, 1, 4, 6, 1, 10, 18, 24, 1, 26, 66, 96, 120, 1, 76, 276, 456, 600, 720, 1, 232, 1212, 2472, 3480, 4320, 5040, 1, 764, 5916, 14736, 22800, 29520, 35280, 40320, 1, 2620, 31068, 92304, 164880, 225360, 277200, 322560, 362880, 1, 9496, 171576, 632736]