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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.

A078606 Constant c(p) used in determining divisibility by the n-th prime, p=A000040(n), for n>=4.

Table of values

n a(n)
4 -2
5 -1
6 4
7 -5
8 2
9 7
10 3
11 -3
12 -11
13 -4
14 13
15 -14
16 16
17 6
18 -6
19 -20
20 -7
21 22
22 8
23 25
24 9
25 -29
26 -10
27 31
28 -32
29 11
30 34
31 -38
32 -13
33 -41
34 14
35 15
36 -15
37 -47
38 49
39 -50
40 52
41 18
42 -18
43 -19
44 58
45 -59
46 20
47 -21
48 67
49 -68
50 23
51 70
52 24
53 -24
54 -25
55 -77
56 79
57 27
58 -27
59 -83
60 -28
61 85
62 88
63 -92
64 -31
65 94
66 -95
67 -33
68 -101
69 -104
70 35
71 106
72 36
73 -110
74 112
75 38

List of values

[-2, -1, 4, -5, 2, 7, 3, -3, -11, -4, 13, -14, 16, 6, -6, -20, -7, 22, 8, 25, 9, -29, -10, 31, -32, 11, 34, -38, -13, -41, 14, 15, -15, -47, 49, -50, 52, 18, -18, -19, 58, -59, 20, -21, 67, -68, 23, 70, 24, -24, -25, -77, 79, 27, -27, -83, -28, 85, 88, -92, -31, 94, -95, -33, -101, -104, 35, 106, 36, -110, 112, 38]