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.

A323855 Triangle read by rows: T(n,k) is the denominator of the generalized harmonic number H(n,k) of rank k (n >= 1, 0 <= k <= n - 1).

Table of values

n a(n)
1 1
2 2
3 1
4 6
5 1
6 1
7 12
8 12
9 2
10 1
11 60
12 4
13 4
14 1
15 1
16 20
17 45
18 8
19 6
20 2
21 1
22 140
23 90
24 120
25 3
26 3
27 1
28 1
29 280
30 5040
31 80
32 80
33 2
34 4
35 2
36 1
37 2520
38 1008
39 378
40 16
41 144
42 4
43 12
44 1
45 1
46 2520
47 25200
48 6048
49 15120
50 288
51 240
52 24
53 3
54 2
55 1
56 27720
57 25200
58 21600
59 5040
60 6048
61 40
62 240
63 1
64 2
65 1
66 1

List of values

[1, 2, 1, 6, 1, 1, 12, 12, 2, 1, 60, 4, 4, 1, 1, 20, 45, 8, 6, 2, 1, 140, 90, 120, 3, 3, 1, 1, 280, 5040, 80, 80, 2, 4, 2, 1, 2520, 1008, 378, 16, 144, 4, 12, 1, 1, 2520, 25200, 6048, 15120, 288, 240, 24, 3, 2, 1, 27720, 25200, 21600, 5040, 6048, 40, 240, 1, 2, 1, 1]