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.

A129131 Alternately write composite and prime numbers.

Table of values

n a(n)
1 4
2 2
3 6
4 3
5 8
6 5
7 9
8 7
9 10
10 11
11 12
12 13
13 14
14 17
15 15
16 19
17 16
18 23
19 18
20 29
21 20
22 31
23 21
24 37
25 22
26 41
27 24
28 43
29 25
30 47
31 26
32 53
33 27
34 59
35 28
36 61
37 30
38 67
39 32
40 71
41 33
42 73
43 34
44 79
45 35
46 83
47 36
48 89
49 38
50 97
51 39
52 101
53 40
54 103
55 42
56 107
57 44
58 109
59 45
60 113
61 46
62 127
63 48
64 131
65 49
66 137
67 50
68 139
69 51

List of values

[4, 2, 6, 3, 8, 5, 9, 7, 10, 11, 12, 13, 14, 17, 15, 19, 16, 23, 18, 29, 20, 31, 21, 37, 22, 41, 24, 43, 25, 47, 26, 53, 27, 59, 28, 61, 30, 67, 32, 71, 33, 73, 34, 79, 35, 83, 36, 89, 38, 97, 39, 101, 40, 103, 42, 107, 44, 109, 45, 113, 46, 127, 48, 131, 49, 137, 50, 139, 51]

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

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