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.

A162195 Sum of proper divisors of n-th nonprime number A018252(n).

Table of values

n a(n)
1 0
2 3
3 6
4 7
5 4
6 8
7 16
8 10
9 9
10 15
11 21
12 22
13 11
14 14
15 36
16 6
17 16
18 13
19 28
20 42
21 31
22 15
23 20
24 13
25 55
26 22
27 17
28 50
29 54
30 40
31 33
32 26
33 76
34 8
35 43
36 21
37 46
38 66
39 17
40 64
41 23
42 32
43 108
44 34
45 41
46 63
47 19
48 78
49 58
50 27
51 74
52 123
53 40
54 49
55 64
56 19
57 90
58 106
59 40
60 44
61 140
62 23
63 46
64 33
65 92
66 144
67 21
68 76
69 35
70 50
71 25

List of values

[0, 3, 6, 7, 4, 8, 16, 10, 9, 15, 21, 22, 11, 14, 36, 6, 16, 13, 28, 42, 31, 15, 20, 13, 55, 22, 17, 50, 54, 40, 33, 26, 76, 8, 43, 21, 46, 66, 17, 64, 23, 32, 108, 34, 41, 63, 19, 78, 58, 27, 74, 123, 40, 49, 64, 19, 90, 106, 40, 44, 140, 23, 46, 33, 92, 144, 21, 76, 35, 50, 25]

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

Content is available under The OEIS End-User License Agreement.