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.

A363694 Number of edges in the prime (Gruenberg-Kegel) graph of the symmetric group, S_n, on n elements.

Table of values

n a(n)
1 0
2 0
3 0
4 0
5 1
6 1
7 2
8 3
9 4
10 5
11 5
12 6
13 7
14 8
15 9
16 11
17 11
18 13
19 14
20 16
21 17
22 19
23 19
24 22
25 23
26 25
27 25
28 27
29 27
30 30
31 31
32 33
33 34
34 37
35 37
36 41
37 41
38 42
39 43
40 46
41 46
42 50
43 51
44 54
45 55
46 58
47 58
48 63
49 64
50 68
51 68
52 71
53 71
54 76
55 77
56 80
57 80
58 83
59 83
60 89
61 90
62 92
63 93
64 98
65 98
66 104
67 104
68 106
69 107
70 112
71 112
72 118
73 119

List of values

[0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 5, 6, 7, 8, 9, 11, 11, 13, 14, 16, 17, 19, 19, 22, 23, 25, 25, 27, 27, 30, 31, 33, 34, 37, 37, 41, 41, 42, 43, 46, 46, 50, 51, 54, 55, 58, 58, 63, 64, 68, 68, 71, 71, 76, 77, 80, 80, 83, 83, 89, 90, 92, 93, 98, 98, 104, 104, 106, 107, 112, 112, 118, 119]