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.

A076361 Numbers k such that d(sigma(k)) = sigma(d(k)).

Table of values

n a(n)
1 1
2 3
3 44
4 49
5 66
6 68
7 70
8 76
9 99
10 121
11 124
12 147
13 153
14 164
15 169
16 170
17 171
18 172
19 243
20 245
21 268
22 275
23 279
24 361
25 363
26 387
27 425
28 475
29 507
30 529
31 564
32 603
33 620
34 644
35 652
36 724
37 775
38 841
39 844
40 845
41 873
42 891
43 927
44 948
45 961
46 964
47 1075
48 1083
49 1132
50 1324
51 1348
52 1377

List of values

[1, 3, 44, 49, 66, 68, 70, 76, 99, 121, 124, 147, 153, 164, 169, 170, 171, 172, 243, 245, 268, 275, 279, 361, 363, 387, 425, 475, 507, 529, 564, 603, 620, 644, 652, 724, 775, 841, 844, 845, 873, 891, 927, 948, 961, 964, 1075, 1083, 1132, 1324, 1348, 1377]