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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.

A127702 Least value of x*y giving Max ( sigma(x*y) : 1<=x<=n, 1<=y<=n ).

Table of values

n a(n)
1 1
2 4
3 9
4 16
5 20
6 36
7 42
8 64
9 72
10 90
11 90
12 144
13 144
14 168
15 210
16 240
17 240
18 324
19 324
20 360
21 420
22 420
23 420
24 576
25 600
26 600
27 600
28 756
29 756
30 840
31 840
32 960
33 960
34 960
35 960
36 1260
37 1260
38 1260
39 1260
40 1560
41 1560
42 1680
43 1680
44 1680
45 1980
46 1980
47 1980
48 2160
49 2160
50 2400
51 2400

List of values

[1, 4, 9, 16, 20, 36, 42, 64, 72, 90, 90, 144, 144, 168, 210, 240, 240, 324, 324, 360, 420, 420, 420, 576, 600, 600, 600, 756, 756, 840, 840, 960, 960, 960, 960, 1260, 1260, 1260, 1260, 1560, 1560, 1680, 1680, 1680, 1980, 1980, 1980, 2160, 2160, 2400, 2400]

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

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