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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.

A078931 Numbers k that divide prime(k)+1 or prime(k)-1.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 10
8 12
9 14
10 70
11 72
12 181
13 182
14 440
15 1053
16 6458
17 6459
18 6460
19 6461
20 6466
21 6471
22 40087
23 40089
24 100362
25 251712
26 251732
27 251737
28 251742
29 637236
30 637320
31 637334
32 637336
33 1617173
34 4124466
35 10553445
36 10553455
37 10553504
38 10553505
39 10553547
40 10553569

List of values

[1, 2, 3, 4, 5, 6, 10, 12, 14, 70, 72, 181, 182, 440, 1053, 6458, 6459, 6460, 6461, 6466, 6471, 40087, 40089, 100362, 251712, 251732, 251737, 251742, 637236, 637320, 637334, 637336, 1617173, 4124466, 10553445, 10553455, 10553504, 10553505, 10553547, 10553569]

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

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