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.

A033885 a(n) = 3*n - sum of divisors of n.

Table of values

n a(n)
1 2
2 3
3 5
4 5
5 9
6 6
7 13
8 9
9 14
10 12
11 21
12 8
13 25
14 18
15 21
16 17
17 33
18 15
19 37
20 18
21 31
22 30
23 45
24 12
25 44
26 36
27 41
28 28
29 57
30 18
31 61
32 33
33 51
34 48
35 57
36 17
37 73
38 54
39 61
40 30
41 81
42 30
43 85
44 48
45 57
46 66
47 93
48 20
49 90
50 57
51 81
52 58
53 105
54 42
55 93
56 48
57 91
58 84
59 117
60 12
61 121
62 90
63 85
64 65
65 111
66 54
67 133
68 78
69 111
70 66

List of values

[2, 3, 5, 5, 9, 6, 13, 9, 14, 12, 21, 8, 25, 18, 21, 17, 33, 15, 37, 18, 31, 30, 45, 12, 44, 36, 41, 28, 57, 18, 61, 33, 51, 48, 57, 17, 73, 54, 61, 30, 81, 30, 85, 48, 57, 66, 93, 20, 90, 57, 81, 58, 105, 42, 93, 48, 91, 84, 117, 12, 121, 90, 85, 65, 111, 54, 133, 78, 111, 66]

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

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