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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.

A131368 Coprime semiprimes: a(n-1) and a(n) are the closest coprime semiprimes.

Table of values

n a(n)
1 4
2 9
3 10
4 21
5 22
6 25
7 26
8 33
9 34
10 35
11 38
12 39
13 46
14 49
15 51
16 55
17 57
18 58
19 65
20 69
21 74
22 77
23 82
24 85
25 86
26 87
27 91
28 93
29 94
30 95
31 106
32 111
33 115
34 118
35 119
36 121
37 122
38 123
39 133
40 134
41 141
42 142
43 143
44 145
45 146
46 155
47 158
48 159
49 161
50 166
51 169
52 177
53 178
54 183
55 185
56 187
57 194
58 201
59 202
60 203

List of values

[4, 9, 10, 21, 22, 25, 26, 33, 34, 35, 38, 39, 46, 49, 51, 55, 57, 58, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95, 106, 111, 115, 118, 119, 121, 122, 123, 133, 134, 141, 142, 143, 145, 146, 155, 158, 159, 161, 166, 169, 177, 178, 183, 185, 187, 194, 201, 202, 203]

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

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