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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.

A023569 Greatest prime divisor of prime(n) - 3.

Table of values

n a(n)
3 2
4 2
5 2
6 5
7 7
8 2
9 5
10 13
11 7
12 17
13 19
14 5
15 11
16 5
17 7
18 29
19 2
20 17
21 7
22 19
23 5
24 43
25 47
26 7
27 5
28 13
29 53
30 11
31 31
32 2
33 67
34 17
35 73
36 37
37 11
38 5
39 41
40 17
41 11
42 89
43 47
44 19
45 97
46 7
47 13
48 11
49 7
50 113
51 23
52 59
53 17
54 31
55 127
56 13
57 19
58 67
59 137
60 139
61 7
62 29
63 19
64 11
65 31
66 157
67 41
68 167
69 43
70 173
71 7
72 89

List of values

[2, 2, 2, 5, 7, 2, 5, 13, 7, 17, 19, 5, 11, 5, 7, 29, 2, 17, 7, 19, 5, 43, 47, 7, 5, 13, 53, 11, 31, 2, 67, 17, 73, 37, 11, 5, 41, 17, 11, 89, 47, 19, 97, 7, 13, 11, 7, 113, 23, 59, 17, 31, 127, 13, 19, 67, 137, 139, 7, 29, 19, 11, 31, 157, 41, 167, 43, 173, 7, 89]

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

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