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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.

A060648 Number of cyclic subgroups of the group C_n X C_n (where C_n is the cyclic group of order n).

Table of values

n a(n)
1 1
2 4
3 5
4 10
5 7
6 20
7 9
8 22
9 17
10 28
11 13
12 50
13 15
14 36
15 35
16 46
17 19
18 68
19 21
20 70
21 45
22 52
23 25
24 110
25 37
26 60
27 53
28 90
29 31
30 140
31 33
32 94
33 65
34 76
35 63
36 170
37 39
38 84
39 75
40 154
41 43
42 180
43 45
44 130
45 119
46 100
47 49
48 230
49 65
50 148
51 95
52 150
53 55
54 212
55 91
56 198
57 105
58 124
59 61
60 350
61 63
62 132
63 153
64 190

List of values

[1, 4, 5, 10, 7, 20, 9, 22, 17, 28, 13, 50, 15, 36, 35, 46, 19, 68, 21, 70, 45, 52, 25, 110, 37, 60, 53, 90, 31, 140, 33, 94, 65, 76, 63, 170, 39, 84, 75, 154, 43, 180, 45, 130, 119, 100, 49, 230, 65, 148, 95, 150, 55, 212, 91, 198, 105, 124, 61, 350, 63, 132, 153, 190]

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

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