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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.

A098168 Prime index j such that prime(j) = the n-th fortunate number, A005235(n).

Table of values

n a(n)
1 2
2 3
3 4
4 6
5 9
6 7
7 8
8 9
9 12
10 18
11 19
12 18
13 20
14 15
15 28
16 17
17 18
18 29
19 24
20 27
21 22
22 36
23 45
24 26
25 27
26 51
27 48
28 31
29 48
30 43
31 38
32 50
33 117
34 52
35 37
36 39
37 85
38 52
39 46
40 43
41 46
42 76
43 51
44 133
45 65
46 137
47 111
48 65
49 76
50 62
51 86
52 67
53 61
54 59
55 58
56 79
57 63
58 67
59 75
60 94
61 67
62 64
63 78
64 67
65 71
66 81
67 82
68 153
69 101
70 221

List of values

[2, 3, 4, 6, 9, 7, 8, 9, 12, 18, 19, 18, 20, 15, 28, 17, 18, 29, 24, 27, 22, 36, 45, 26, 27, 51, 48, 31, 48, 43, 38, 50, 117, 52, 37, 39, 85, 52, 46, 43, 46, 76, 51, 133, 65, 137, 111, 65, 76, 62, 86, 67, 61, 59, 58, 79, 63, 67, 75, 94, 67, 64, 78, 67, 71, 81, 82, 153, 101, 221]