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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.

A004055 ((p-1)/2)! mod p for odd primes p.

Table of values

n a(n)
1 1
2 2
3 6
4 10
5 5
6 13
7 18
8 1
9 12
10 1
11 31
12 9
13 42
14 46
15 23
16 1
17 11
18 66
19 1
20 27
21 78
22 1
23 34
24 22
25 91
26 102
27 1
28 33
29 15
30 126
31 130
32 37
33 1
34 44
35 1
36 129
37 162
38 1
39 80
40 178
41 162
42 190
43 81
44 183
45 198
46 1
47 1
48 226
49 122
50 144
51 1
52 64
53 1
54 16
55 262
56 187
57 1
58 217
59 53
60 1
61 138
62 1
63 1
64 288
65 114
66 1
67 189

List of values

[1, 2, 6, 10, 5, 13, 18, 1, 12, 1, 31, 9, 42, 46, 23, 1, 11, 66, 1, 27, 78, 1, 34, 22, 91, 102, 1, 33, 15, 126, 130, 37, 1, 44, 1, 129, 162, 1, 80, 178, 162, 190, 81, 183, 198, 1, 1, 226, 122, 144, 1, 64, 1, 16, 262, 187, 1, 217, 53, 1, 138, 1, 1, 288, 114, 1, 189]