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.

A355535 Odd numbers of which it is not possible to choose a different prime factor of each prime index.

Table of values

n a(n)
1 9
2 21
3 25
4 27
5 45
6 49
7 57
8 63
9 75
10 81
11 99
12 105
13 115
14 117
15 121
16 125
17 133
18 135
19 147
20 153
21 159
22 171
23 175
24 189
25 195
26 207
27 225
28 231
29 243
30 245
31 261
32 273
33 275
34 279
35 285
36 289
37 297
38 315
39 325
40 333
41 343
42 345
43 351
44 357
45 361
46 363
47 369
48 371
49 375
50 387
51 393
52 399
53 405
54 423

List of values

[9, 21, 25, 27, 45, 49, 57, 63, 75, 81, 99, 105, 115, 117, 121, 125, 133, 135, 147, 153, 159, 171, 175, 189, 195, 207, 225, 231, 243, 245, 261, 273, 275, 279, 285, 289, 297, 315, 325, 333, 343, 345, 351, 357, 361, 363, 369, 371, 375, 387, 393, 399, 405, 423]