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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.

A216846 Union of the composite numbers and the primes for which 2 is a primitive root.

Table of values

n a(n)
1 3
2 4
3 5
4 6
5 8
6 9
7 10
8 11
9 12
10 13
11 14
12 15
13 16
14 18
15 19
16 20
17 21
18 22
19 24
20 25
21 26
22 27
23 28
24 29
25 30
26 32
27 33
28 34
29 35
30 36
31 37
32 38
33 39
34 40
35 42
36 44
37 45
38 46
39 48
40 49
41 50
42 51
43 52
44 53
45 54
46 55
47 56
48 57
49 58
50 59
51 60
52 61
53 62
54 63
55 64
56 65
57 66
58 67
59 68
60 69
61 70
62 72
63 74
64 75
65 76
66 77
67 78

List of values

[3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 74, 75, 76, 77, 78]

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

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