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.

A129246 Iterated sum of divisors array A[k,n] = k-th iterate of sigma(n), by upward antidiagonals.

Table of values

n a(n)
1 1
2 1
3 3
4 1
5 4
6 4
7 1
8 7
9 7
10 7
11 1
12 8
13 8
14 8
15 6
16 1
17 15
18 15
19 15
20 12
21 12
22 1
23 24
24 24
25 24
26 28
27 28
28 8
29 1
30 60
31 60
32 60
33 56
34 56
35 15
36 15
37 1
38 168
39 168
40 168
41 120
42 120
43 24
44 24
45 13
46 1
47 480
48 480
49 480
50 360
51 360
52 60
53 60
54 14
55 18
56 1
57 1512
58 1512
59 1512
60 1170
61 1170
62 168
63 168
64 24
65 39
66 12
67 1
68 4800
69 4800

List of values

[1, 1, 3, 1, 4, 4, 1, 7, 7, 7, 1, 8, 8, 8, 6, 1, 15, 15, 15, 12, 12, 1, 24, 24, 24, 28, 28, 8, 1, 60, 60, 60, 56, 56, 15, 15, 1, 168, 168, 168, 120, 120, 24, 24, 13, 1, 480, 480, 480, 360, 360, 60, 60, 14, 18, 1, 1512, 1512, 1512, 1170, 1170, 168, 168, 24, 39, 12, 1, 4800, 4800]