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.

A288939 Nonprime numbers k such that k^6 + k^5 + k^4 + k^3 + k^2 + k + 1 is prime.

Table of values

n a(n)
1 1
2 6
3 14
4 26
5 38
6 40
7 46
8 56
9 60
10 66
11 68
12 72
13 80
14 87
15 93
16 95
17 115
18 122
19 126
20 128
21 146
22 156
23 158
24 160
25 180
26 186
27 192
28 203
29 206
30 208
31 220
32 221
33 235
34 237
35 238
36 264
37 266
38 280
39 282
40 290
41 294
42 300
43 303
44 320
45 341
46 350
47 363
48 381
49 395
50 399
51 404
52 405
53 417
54 418
55 436
56 438
57 447
58 450

List of values

[1, 6, 14, 26, 38, 40, 46, 56, 60, 66, 68, 72, 80, 87, 93, 95, 115, 122, 126, 128, 146, 156, 158, 160, 180, 186, 192, 203, 206, 208, 220, 221, 235, 237, 238, 264, 266, 280, 282, 290, 294, 300, 303, 320, 341, 350, 363, 381, 395, 399, 404, 405, 417, 418, 436, 438, 447, 450]

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

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