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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.

A046897 Sum of divisors of n that are not divisible by 4.

Table of values

n a(n)
1 1
2 3
3 4
4 3
5 6
6 12
7 8
8 3
9 13
10 18
11 12
12 12
13 14
14 24
15 24
16 3
17 18
18 39
19 20
20 18
21 32
22 36
23 24
24 12
25 31
26 42
27 40
28 24
29 30
30 72
31 32
32 3
33 48
34 54
35 48
36 39
37 38
38 60
39 56
40 18
41 42
42 96
43 44
44 36
45 78
46 72
47 48
48 12
49 57
50 93
51 72
52 42
53 54
54 120
55 72
56 24
57 80
58 90
59 60
60 72
61 62
62 96
63 104
64 3
65 84
66 144
67 68
68 54
69 96
70 144
71 72

List of values

[1, 3, 4, 3, 6, 12, 8, 3, 13, 18, 12, 12, 14, 24, 24, 3, 18, 39, 20, 18, 32, 36, 24, 12, 31, 42, 40, 24, 30, 72, 32, 3, 48, 54, 48, 39, 38, 60, 56, 18, 42, 96, 44, 36, 78, 72, 48, 12, 57, 93, 72, 42, 54, 120, 72, 24, 80, 90, 60, 72, 62, 96, 104, 3, 84, 144, 68, 54, 96, 144, 72]

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

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