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.

A110928 Pairs of distinct numbers m and n, m such that sigma_2(m)=sigma_2(n), where sigma_2(n) is the sum of the squares of all divisors of n.

Table of values

n a(n)
1 6
2 7
3 24
4 26
5 30
6 35
7 40
8 47
9 66
10 77
11 78
12 91
13 102
14 119
15 114
16 133
17 120
18 130
19 120
20 141
21 130
22 141
23 136
24 157
25 138
26 161
27 150
28 175
29 168
30 182
31 174
32 203
33 186
34 215
35 186
36 217
37 215
38 217
39 222
40 259
41 230
42 249
43 246
44 287
45 258
46 301
47 264
48 286
49 280
50 282
51 280
52 329
53 282
54 329
55 318

List of values

[6, 7, 24, 26, 30, 35, 40, 47, 66, 77, 78, 91, 102, 119, 114, 133, 120, 130, 120, 141, 130, 141, 136, 157, 138, 161, 150, 175, 168, 182, 174, 203, 186, 215, 186, 217, 215, 217, 222, 259, 230, 249, 246, 287, 258, 301, 264, 286, 280, 282, 280, 329, 282, 329, 318]

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

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