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.

A081258 Numbers k > 1 such that k^3 - 1 (or equivalently k^2 + k + 1) has no prime factor greater than k.

Table of values

n a(n)
1 16
2 18
3 22
4 30
5 49
6 67
7 68
8 74
9 79
10 81
11 87
12 100
13 102
14 121
15 135
16 137
17 146
18 149
19 154
20 158
21 159
22 163
23 165
24 169
25 172
26 178
27 181
28 191
29 211
30 221
31 229
32 230
33 235
34 256
35 262
36 263
37 269
38 273
39 277
40 291
41 292
42 301
43 305
44 313
45 315
46 324
47 326
48 334
49 352
50 361
51 372
52 373
53 380
54 393

List of values

[16, 18, 22, 30, 49, 67, 68, 74, 79, 81, 87, 100, 102, 121, 135, 137, 146, 149, 154, 158, 159, 163, 165, 169, 172, 178, 181, 191, 211, 221, 229, 230, 235, 256, 262, 263, 269, 273, 277, 291, 292, 301, 305, 313, 315, 324, 326, 334, 352, 361, 372, 373, 380, 393]