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.

A103876 a(n) = -1/10 (mod prime(n)): A test for divisibility by the n-th prime.

Table of values

n a(n)
4 2
5 1
6 9
7 5
8 17
9 16
10 26
11 3
12 11
13 4
14 30
15 14
16 37
17 53
18 6
19 20
20 7
21 51
22 71
23 58
24 80
25 29
26 10
27 72
28 32
29 98
30 79
31 38
32 13
33 41
34 125
35 134
36 15
37 47
38 114
39 50
40 121
41 161
42 18
43 19
44 135
45 59
46 179
47 21
48 156
49 68
50 206
51 163
52 215
53 24
54 25
55 77
56 184
57 242
58 27
59 83
60 28
61 198
62 205
63 92
64 31
65 219
66 95
67 33
68 101
69 104

List of values

[2, 1, 9, 5, 17, 16, 26, 3, 11, 4, 30, 14, 37, 53, 6, 20, 7, 51, 71, 58, 80, 29, 10, 72, 32, 98, 79, 38, 13, 41, 125, 134, 15, 47, 114, 50, 121, 161, 18, 19, 135, 59, 179, 21, 156, 68, 206, 163, 215, 24, 25, 77, 184, 242, 27, 83, 28, 198, 205, 92, 31, 219, 95, 33, 101, 104]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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