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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.

A061008 a(n) = Sum_{j=1..n} (-(n-1)! mod n).

Table of values

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

List of values

[0, 1, 2, 4, 5, 5, 6, 6, 6, 6, 7, 7, 8, 8, 8, 8, 9, 9, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 19, 19, 20, 20, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 23, 23, 23]

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