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.

A009278 a(n) = lcm(d(n), sigma(n)).

Table of values

n a(n)
1 1
2 6
3 4
4 21
5 6
6 12
7 8
8 60
9 39
10 36
11 12
12 84
13 14
14 24
15 24
16 155
17 18
18 78
19 20
20 42
21 32
22 36
23 24
24 120
25 93
26 84
27 40
28 168
29 30
30 72
31 32
32 126
33 48
34 108
35 48
36 819
37 38
38 60
39 56
40 360
41 42
42 96
43 44
44 84
45 78
46 72
47 48
48 620
49 57
50 186
51 72
52 294
53 54
54 120
55 72
56 120
57 80
58 180
59 60
60 168
61 62
62 96
63 312
64 889
65 84
66 144
67 68

List of values

[1, 6, 4, 21, 6, 12, 8, 60, 39, 36, 12, 84, 14, 24, 24, 155, 18, 78, 20, 42, 32, 36, 24, 120, 93, 84, 40, 168, 30, 72, 32, 126, 48, 108, 48, 819, 38, 60, 56, 360, 42, 96, 44, 84, 78, 72, 48, 620, 57, 186, 72, 294, 54, 120, 72, 120, 80, 180, 60, 168, 62, 96, 312, 889, 84, 144, 68]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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