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.

A129145 Alternately odd prime and odd composite numbers.

Table of values

n a(n)
1 3
2 9
3 5
4 15
5 7
6 21
7 11
8 25
9 13
10 27
11 17
12 33
13 19
14 35
15 23
16 39
17 29
18 45
19 31
20 49
21 37
22 51
23 41
24 55
25 43
26 57
27 47
28 63
29 53
30 65
31 59
32 69
33 61
34 75
35 67
36 77
37 71
38 81
39 73
40 85
41 79
42 87
43 83
44 91
45 89
46 93
47 97
48 95
49 101
50 99
51 103
52 105
53 107
54 111
55 109
56 115
57 113
58 117
59 127
60 119
61 131
62 121
63 137
64 123
65 139
66 125

List of values

[3, 9, 5, 15, 7, 21, 11, 25, 13, 27, 17, 33, 19, 35, 23, 39, 29, 45, 31, 49, 37, 51, 41, 55, 43, 57, 47, 63, 53, 65, 59, 69, 61, 75, 67, 77, 71, 81, 73, 85, 79, 87, 83, 91, 89, 93, 97, 95, 101, 99, 103, 105, 107, 111, 109, 115, 113, 117, 127, 119, 131, 121, 137, 123, 139, 125]

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

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