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.

A276983 Semiprimes n such that n-1 or n+1 is prime.

Table of values

n a(n)
1 4
2 6
3 10
4 14
5 22
6 38
7 46
8 58
9 62
10 74
11 82
12 106
13 158
14 166
15 178
16 194
17 226
18 262
19 278
20 314
21 346
22 358
23 382
24 398
25 422
26 458
27 466
28 478
29 502
30 542
31 562
32 586
33 614
34 662
35 674
36 718
37 734
38 758
39 838
40 862
41 878
42 886
43 982
44 998
45 1018
46 1094
47 1154
48 1186
49 1202
50 1214
51 1238
52 1282
53 1306
54 1318
55 1322

List of values

[4, 6, 10, 14, 22, 38, 46, 58, 62, 74, 82, 106, 158, 166, 178, 194, 226, 262, 278, 314, 346, 358, 382, 398, 422, 458, 466, 478, 502, 542, 562, 586, 614, 662, 674, 718, 734, 758, 838, 862, 878, 886, 982, 998, 1018, 1094, 1154, 1186, 1202, 1214, 1238, 1282, 1306, 1318, 1322]

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

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