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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.

A114439 Indices of semiprime pentagonal numbers.

Table of values

n a(n)
1 4
2 5
3 6
4 10
5 13
6 14
7 29
8 34
9 38
10 41
11 46
12 53
13 58
14 73
15 86
16 94
17 101
18 106
19 109
20 118
21 134
22 149
23 181
24 206
25 214
26 218
27 226
28 233
29 254
30 274
31 281
32 293
33 314
34 326
35 349
36 394
37 398
38 401
39 409
40 421
41 449
42 454
43 458
44 461
45 478
46 538
47 541
48 566
49 569
50 613
51 626
52 634
53 661
54 673
55 694

List of values

[4, 5, 6, 10, 13, 14, 29, 34, 38, 41, 46, 53, 58, 73, 86, 94, 101, 106, 109, 118, 134, 149, 181, 206, 214, 218, 226, 233, 254, 274, 281, 293, 314, 326, 349, 394, 398, 401, 409, 421, 449, 454, 458, 461, 478, 538, 541, 566, 569, 613, 626, 634, 661, 673, 694]