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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.

A126288 a(1) = 2, a(n) = n * LargestPrimeFactor(n+1) / LargestPrimeFactor(n).

Table of values

n a(n)
1 2
2 3
3 2
4 10
5 3
6 14
7 2
8 12
9 15
10 22
11 3
12 52
13 7
14 10
15 6
16 136
17 3
18 114
19 5
20 28
21 33
22 46
23 3
24 40
25 65
26 6
27 63
28 116
29 5
30 186
31 2
32 176
33 51
34 14
35 15
36 444
37 19
38 26
39 15
40 328
41 7
42 258
43 11
44 20
45 207
46 94
47 3
48 112
49 35
50 170
51 39
52 212
53 3
54 198
55 35
56 152
57 87
58 118
59 5
60 732
61 31
62 14
63 18
64 416
65 55
66 402
67 17
68 92
69 21
70 710

List of values

[2, 3, 2, 10, 3, 14, 2, 12, 15, 22, 3, 52, 7, 10, 6, 136, 3, 114, 5, 28, 33, 46, 3, 40, 65, 6, 63, 116, 5, 186, 2, 176, 51, 14, 15, 444, 19, 26, 15, 328, 7, 258, 11, 20, 207, 94, 3, 112, 35, 170, 39, 212, 3, 198, 35, 152, 87, 118, 5, 732, 31, 14, 18, 416, 55, 402, 17, 92, 21, 710]

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

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