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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.

A111863 a(n) is the smallest prime factor of 6*n-1 that is congruent to 5 modulo 6.

Table of values

n a(n)
1 5
2 11
3 17
4 23
5 29
6 5
7 41
8 47
9 53
10 59
11 5
12 71
13 11
14 83
15 89
16 5
17 101
18 107
19 113
20 17
21 5
22 131
23 137
24 11
25 149
26 5
27 23
28 167
29 173
30 179
31 5
32 191
33 197
34 29
35 11
36 5
37 17
38 227
39 233
40 239
41 5
42 251
43 257
44 263
45 269
46 5
47 281
48 41
49 293
50 23
51 5
52 311
53 317
54 17
55 47
56 5
57 11
58 347
59 353
60 359
61 5
62 53
63 29
64 383
65 389
66 5

List of values

[5, 11, 17, 23, 29, 5, 41, 47, 53, 59, 5, 71, 11, 83, 89, 5, 101, 107, 113, 17, 5, 131, 137, 11, 149, 5, 23, 167, 173, 179, 5, 191, 197, 29, 11, 5, 17, 227, 233, 239, 5, 251, 257, 263, 269, 5, 281, 41, 293, 23, 5, 311, 317, 17, 47, 5, 11, 347, 353, 359, 5, 53, 29, 383, 389, 5]

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