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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.

A023503 Greatest prime divisor of prime(n) - 1.

Table of values

n a(n)
2 2
3 2
4 3
5 5
6 3
7 2
8 3
9 11
10 7
11 5
12 3
13 5
14 7
15 23
16 13
17 29
18 5
19 11
20 7
21 3
22 13
23 41
24 11
25 3
26 5
27 17
28 53
29 3
30 7
31 7
32 13
33 17
34 23
35 37
36 5
37 13
38 3
39 83
40 43
41 89
42 5
43 19
44 3
45 7
46 11
47 7
48 37
49 113
50 19
51 29
52 17
53 5
54 5
55 2
56 131
57 67
58 5
59 23
60 7
61 47
62 73
63 17
64 31
65 13
66 79
67 11
68 7
69 173
70 29
71 11
72 179
73 61
74 31
75 7
76 191

List of values

[2, 2, 3, 5, 3, 2, 3, 11, 7, 5, 3, 5, 7, 23, 13, 29, 5, 11, 7, 3, 13, 41, 11, 3, 5, 17, 53, 3, 7, 7, 13, 17, 23, 37, 5, 13, 3, 83, 43, 89, 5, 19, 3, 7, 11, 7, 37, 113, 19, 29, 17, 5, 5, 2, 131, 67, 5, 23, 7, 47, 73, 17, 31, 13, 79, 11, 7, 173, 29, 11, 179, 61, 31, 7, 191]

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

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