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.

A110927 Larger of the pair of distinct numbers m and n 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 7
2 26
3 35
4 47
5 77
6 91
7 119
8 133
9 130
10 141
11 141
12 157
13 161
14 175
15 182
16 203
17 215
18 217
19 217
20 259
21 249
22 287
23 301
24 286
25 282
26 329
27 329
28 371
29 385
30 413
31 423
32 427
33 455
34 469
35 442
36 471
37 497
38 434
39 511
40 517
41 471
42 494
43 553
44 581
45 595
46 611
47 623
48 598
49 665
50 679
51 650
52 707
53 721

List of values

[7, 26, 35, 47, 77, 91, 119, 133, 130, 141, 141, 157, 161, 175, 182, 203, 215, 217, 217, 259, 249, 287, 301, 286, 282, 329, 329, 371, 385, 413, 423, 427, 455, 469, 442, 471, 497, 434, 511, 517, 471, 494, 553, 581, 595, 611, 623, 598, 665, 679, 650, 707, 721]

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

Content is available under The OEIS End-User License Agreement.