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.

A072815 Sum of proper divisors of 6n + 1.

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 6
5 1
6 1
7 1
8 8
9 17
10 1
11 1
12 1
13 1
14 23
15 21
16 1
17 1
18 1
19 29
20 12
21 1
22 27
23 1
24 35
25 1
26 1
27 1
28 14
29 73
30 1
31 29
32 1
33 1
34 47
35 1
36 39
37 1
38 1
39 53
40 1
41 33
42 35
43 45
44 59
45 1
46 1
47 1
48 18
49 65
50 51
51 1
52 1
53 41
54 109
55 1
56 1
57 57
58 1
59 77
60 20
61 1
62 1
63 1
64 191
65 41
66 1
67 45
68 1
69 89
70 1
71 69
72 1
73 1
74 95
75 53
76 1

List of values

[0, 1, 1, 1, 6, 1, 1, 1, 8, 17, 1, 1, 1, 1, 23, 21, 1, 1, 1, 29, 12, 1, 27, 1, 35, 1, 1, 1, 14, 73, 1, 29, 1, 1, 47, 1, 39, 1, 1, 53, 1, 33, 35, 45, 59, 1, 1, 1, 18, 65, 51, 1, 1, 41, 109, 1, 1, 57, 1, 77, 20, 1, 1, 1, 191, 41, 1, 45, 1, 89, 1, 69, 1, 1, 95, 53, 1]