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.

A339005 Numbers of the form prime(x) * prime(y) where x properly divides y. Squarefree semiprimes with divisible prime indices.

Table of values

n a(n)
1 6
2 10
3 14
4 21
5 22
6 26
7 34
8 38
9 39
10 46
11 57
12 58
13 62
14 65
15 74
16 82
17 86
18 87
19 94
20 106
21 111
22 115
23 118
24 122
25 129
26 133
27 134
28 142
29 146
30 158
31 159
32 166
33 178
34 183
35 185
36 194
37 202
38 206
39 213
40 214
41 218
42 226
43 235
44 237
45 254
46 259
47 262
48 267
49 274
50 278
51 298
52 302
53 303
54 305
55 314
56 319

List of values

[6, 10, 14, 21, 22, 26, 34, 38, 39, 46, 57, 58, 62, 65, 74, 82, 86, 87, 94, 106, 111, 115, 118, 122, 129, 133, 134, 142, 146, 158, 159, 166, 178, 183, 185, 194, 202, 206, 213, 214, 218, 226, 235, 237, 254, 259, 262, 267, 274, 278, 298, 302, 303, 305, 314, 319]

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

Content is available under The OEIS End-User License Agreement.