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.

A065957 This is the case k = 3 of the number of orbits of the group of units of Z/(n) acting naturally on the k-subsets of Z/(n).

Table of values

n a(n)
3 1
4 3
5 3
6 12
7 7
8 20
9 16
10 32
11 17
12 72
13 25
14 64
15 65
16 89
17 43
18 148
19 55
20 172
21 123
22 156
23 81
24 334
25 118
26 220
27 175
28 322
29 131
30 556
31 151
32 374
33 291
34 376
35 289
36 735
37 217
38 472
39 405
40 766
41 267
42 1028
43 295
44 760
45 659
46 692
47 353
48 1368
49 446
50 1008
51 685
52 1054
53 451
54 1484
55 681
56 1398
57 855

List of values

[1, 3, 3, 12, 7, 20, 16, 32, 17, 72, 25, 64, 65, 89, 43, 148, 55, 172, 123, 156, 81, 334, 118, 220, 175, 322, 131, 556, 151, 374, 291, 376, 289, 735, 217, 472, 405, 766, 267, 1028, 295, 760, 659, 692, 353, 1368, 446, 1008, 685, 1054, 451, 1484, 681, 1398, 855]