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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.

A258817 a(n) = (!0 + !1 +... + !(n-1)) mod n.

Table of values

n a(n)
1 0
2 1
3 2
4 0
5 3
6 3
7 0
8 0
9 8
10 5
11 4
12 0
13 9
14 7
15 8
16 0
17 13
18 9
19 4
20 0
21 14
22 11
23 14
24 0
25 3
26 13
27 17
28 0
29 25
30 15
31 4
32 0
33 26
34 17
35 28
36 0
37 30
38 19
39 35
40 0
41 4
42 21
43 9
44 0
45 8
46 23
47 32
48 0
49 7
50 25
51 47
52 0
53 30
54 27
55 48
56 0
57 23
58 29
59 45
60 0
61 48
62 31
63 35
64 0
65 48
66 33
67 12
68 0
69 14
70 35
71 7
72 0
73 34
74 37
75 53

List of values

[0, 1, 2, 0, 3, 3, 0, 0, 8, 5, 4, 0, 9, 7, 8, 0, 13, 9, 4, 0, 14, 11, 14, 0, 3, 13, 17, 0, 25, 15, 4, 0, 26, 17, 28, 0, 30, 19, 35, 0, 4, 21, 9, 0, 8, 23, 32, 0, 7, 25, 47, 0, 30, 27, 48, 0, 23, 29, 45, 0, 48, 31, 35, 0, 48, 33, 12, 0, 14, 35, 7, 0, 34, 37, 53]

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