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.

A225495 Numbers having only weak prime factors, cf. A051635.

Table of values

n a(n)
1 1
2 3
3 7
4 9
5 13
6 19
7 21
8 23
9 27
10 31
11 39
12 43
13 47
14 49
15 57
16 61
17 63
18 69
19 73
20 81
21 83
22 89
23 91
24 93
25 103
26 109
27 113
28 117
29 129
30 131
31 133
32 139
33 141
34 147
35 151
36 161
37 167
38 169
39 171
40 181
41 183
42 189
43 193
44 199
45 207
46 217
47 219
48 229
49 233
50 241
51 243
52 247
53 249
54 267
55 271
56 273
57 279

List of values

[1, 3, 7, 9, 13, 19, 21, 23, 27, 31, 39, 43, 47, 49, 57, 61, 63, 69, 73, 81, 83, 89, 91, 93, 103, 109, 113, 117, 129, 131, 133, 139, 141, 147, 151, 161, 167, 169, 171, 181, 183, 189, 193, 199, 207, 217, 219, 229, 233, 241, 243, 247, 249, 267, 271, 273, 279]