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.

A237290 Sum of positive numbers k <= sigma(n) that are a sum of any subset of distinct divisors of n.

Table of values

n a(n)
1 1
2 6
3 8
4 28
5 12
6 78
7 16
8 120
9 52
10 144
11 24
12 406
13 28
14 192
15 192
16 496
17 36
18 780
19 40
20 903
21 256
22 288
23 48
24 1830
25 124
26 336
27 320
28 1596
29 60
30 2628
31 64
32 2016
33 384
34 432
35 384
36 4186
37 76
38 480
39 448
40 4095
41 84
42 4656
43 88
44 2688
45 2184
46 576
47 96
48 7750
49 228
50 2976
51 576
52 3136
53 108
54 7260

List of values

[1, 6, 8, 28, 12, 78, 16, 120, 52, 144, 24, 406, 28, 192, 192, 496, 36, 780, 40, 903, 256, 288, 48, 1830, 124, 336, 320, 1596, 60, 2628, 64, 2016, 384, 432, 384, 4186, 76, 480, 448, 4095, 84, 4656, 88, 2688, 2184, 576, 96, 7750, 228, 2976, 576, 3136, 108, 7260]