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.

A100318 Numbers n such that at least one of n-1 and n+1 is composite.

Table of values

n a(n)
1 3
2 5
3 7
4 8
5 9
6 10
7 11
8 13
9 14
10 15
11 16
12 17
13 19
14 20
15 21
16 22
17 23
18 24
19 25
20 26
21 27
22 28
23 29
24 31
25 32
26 33
27 34
28 35
29 36
30 37
31 38
32 39
33 40
34 41
35 43
36 44
37 45
38 46
39 47
40 48
41 49
42 50
43 51
44 52
45 53
46 54
47 55
48 56
49 57
50 58
51 59
52 61
53 62
54 63
55 64
56 65
57 66
58 67
59 68
60 69
61 70
62 71
63 73
64 74
65 75
66 76
67 77
68 78
69 79
70 80
71 81

List of values

[3, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 80, 81]

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

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